i

PREFACE

This worktext entitled “Module for CC-101” is a collaborative work of the

instructors from the different campuses of Nueva Ecija University of Science and
Technology who will be handling the subject “Computer Programming 1,
Fundamentals” under the degree, Bachelor of Science in Information Technology
which is offered every first semester of the academic year. The authors devised a
way on how to present the topics of the subject in the simplest ways for the
students to easily comprehend the lessons without agonizing over technical
jargons related to computer programming.
The module is designed to introduce the basic programming concepts as
well as to establish the foundation of programming through the use of the C++
language. It also includes discussions of terminologies, dynamics of flowcharting,
and sample codes that can help the students learn and establish better
appreciation of computer programming. Both objective and coding exercises are
provided at the end of each chapter that can serve as a review and assessment of
the knowledge gained.
The module is designed in such a way that it can be used in the different
modalities of teaching-learning experience in the new normal. Most importantly,
this material serves as a bridge to the teacher and students in achieving quality
instruction and effective learning despite the crisis that we are experiencing
nowadays.

ii
 Activity: What Do You Already Know About?

Pre-Assessment Test

Welcome to CC101 – Computer Programming, Fundamentals! Let’s start with

a little get-to-know-you quiz to assess your background in programming. Please
answer the questions honestly by marking your responses with a check.

Do You Already Yes, I do! Maybe but I have no idea

Know... unsure
...what is
programming?
... how to draw
flowcharts?
... how to write
codes in C++?
...what are
variables?
...the different
control structures?
... if-else and
switch statements?

iii
 TABLE OF CONTENTS

Preface ii
Pre-Assessment Test iii
Unit 1. Programming Concepts 1
A. Software 1
B. Programmers 1
C. Hardware 2
D. Problem Solving 2
E. Elements of Programming 4
F. Programming Paradigms 5

Unit 2. Number Systems 8

A. Types of Number Systems 8
B. Conversions 8
1. Binary number to Decimal number Conversion 8
2. Decimal number to Binary number Conversion 9
3. Hexadecimal number to Binary number Conversion 11
4. Binary number to Hexadecimal number Conversion 12
5. Hexadecimal number to Decimal number Conversion 13
6. Decimal number to Hexadecimal number Conversion 14

Unit 3. Programming Languages 18

A. History 18
B. Types of High-level Programs 19
C. Control Structures 19
D. Flowchart 22

Unit 4. C++ Programming 33

A. Applications for Desktops/Laptops 34
1. Code::Blocks 34
2. Text Editor and Command Line Interface 41
B. C++ Application for iOS Devices 51
1. CppCode 51
C. Applications for Android Devices 57
1. Cxxdroid 57
2. CppDroid 63
3. C++ Compiler IDE 69
iv
Unit 5. Identifiers, Variables, and Constants 75
A. Identifiers 75
B. Data Types 76
C. Variables 77
D. Constants 78
E. Assignment Statements and Assignment Expressions 79
F. Mathematical Operators 80

Unit 6. Input/Output Statements 87

A. The Output Statement 87
B. The Input Statement 88

Unit 7. Decision Making 92

A. The if Statement 92
B. The if-else Statement 93
C. Relational Operators 94
D. Boolean Operators 94
E. The nested if-else Statement 101
F. The switch Statement 108

Post-Assessment Test 116

References 117

v
UNIT 1. PROGRAMMING CONCEPTS
Learning Objectives
At the end of the unit, I am able to:
1. define software and hardware;
2. identify types of programmers;
3. explain the steps of problem solving;
4. identify the elements of programming; and
5. classify the programming paradigms.

To many people, computers may seem intelligent machines because they

can do tasks efficiently and easily, but in actuality, they are just machines which
will not do anything unless the tasks are specified by the users using programs
that are executed into them.

A. SOFTWARE
A software is a collection of codes that instructs the computer on what it
will do. Another term for software is computer program. For complicated or large
programs, say, the NEUST enrolment system, the program is consists of two sets
of codes, the first are codes that instruct the computer and the second set is
consists of codes which contain data. The lists of instructions are called program
codes and the process of typing these codes into a computer is called program
coding or simply coding.

B. PROGRAMMERS
The people who write program codes are called programmers. Programmers
are classified as:
1. SYSTEM PROGRAMMERS
These are the people who create and maintain programs which are
involved in the computer’s basic operating functions like operating systems,
utilities and device drivers.

2. APPLICATION PROGRAMMERS
They are the ones who create and maintain programs that have
specific functions such as Point Of Sale (POS) programs that calculate and
generate the payroll report of a certain company, and others.

1
 TYPES OF APPLICATION PROGRAMMERS
• DATABASE APPLICATION PROGRAMMERS
• WEB APPLICATION PROGRAMMERS
• GAME DEVELOPERS
• MICRO DEVICES PROGRAMMERS

C. HARDWARE
The physical components of a computer system is called hardware. It may
be consisted of the CPU, the keyboard, the LCD screen and other peripherals like
mouse, printer, webcam, etc. These are the tangible parts of the computer system
which you can touch.

D. PROBLEM SOLVING
Just like when writing a term paper, the first step in creating an effective
program is proper thought and preparation. Planning for the final output is very
important so as to have the solution that you are picturing in your mind for a
particular problem.

STEPS IN PROGRAMMING
The following figure illustrates the steps that a programmer should follow in
creating C++ programs:

PLANNING

DOCUMENTATION
ANALYSIS

DESIGN

DEVELOPMENT

TESTING &
DEBUGGING

2
1. PLANNING
The planning stage revolves around the determination of the requirements,
then setting the processes by which these goals are to be achieved.
2. ANALYSIS
In the analysis stage, you must determine the precise objectives that
you want to achieve to create a solution to the presented problem. The material
that the program generates is called OUTPUT. A FILE, which is stored by name,
is a collection of information. A file may contain data, a program or some other
document.
After deciding what the output will be, you should determine the information
that is needed to achieve your objectives. These data that the program requires to
produce the desired results are called INPUT.
Next will be to decide what will be the major steps required for processing
the input to produce the output. A PROCESS is a mechanism for converting input
to output.
3. DESIGN
After analyzing the problem, we use this analysis to design a solution. You
can use modeling tools to guide you in designing a solution to the problem.
Examples of such tools are flowcharts and algorithms.

4. DEVELOPMENT
In this step, you translate the design into a program. Writing computer
instructions using any of the available programming languages is called CODING.
These computer instructions or simply statements are called CODES.
5. TESTING AND DEBUGGING
Testing the problem’s solution on the computer overlaps with the design
and development phases. Testing is done so that all the computer errors or simply
called BUGS will be eliminated or corrected and the process of correcting errors is
referred to as DEBUGGING.

DOCUMENTATION
Documentation means that you have to create materials that will generally
describe all the things you did in the whole process of developing a project or a
program. All the steps in programming require documenting for the purpose of
reference.

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E. ELEMENTS OF PROGRAMMING
Almost all the programs are designed to solve problems. The design team
is presented with the problem first and using these requirements, they will consider
several methods on how to reach the final output, utilizing the following elements
of programming:
1. INPUT

The necessary information is collected at the start of programming.

This means getting the INPUT into the program. The data you type, the click
of the mouse, sources coming from compact disks or flashdrives are input
values.
2. DATA
There should be a place to keep the input. These inputs are now
called DATA. Data are raw values which are not yet subjected into any
manipulation.
3. OPERATIONS

The data are then applied with the correct OPERATIONS to

manipulate it. The OPERATIONS can be
a. Assigning values to constants and variables;
b. Subjecting values to different mathematical operations using the
plus (+), minus (-), asterisk (*), slash (/) and modulo (%); and
c. Comparing values using relational operators and logical
operators like OR (||), NOT (!), AND (&&), etc.

4. OUTPUT
The manipulated data will be extracted from the program and sent
back to the user. The extracted data is referred to as OUTPUT.

5. CONDITIONAL EXECUTION
Data can also be manipulated using conditional execution or
BRANCHING. There may be codes that require comparison first before
execution.
6. LOOPS

Data can also be manipulated using looping. LOOPS execute a set

of instructions until the condition inside the loop statement evaluates to
false.
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 7. SUBROUTINES
Data are sometimes manipulated by breaking them into small pieces
and are executed at different locations in the program. These are called
subroutines which are methods or sets of instructions that are executed by
the program by calling their specific names throughout the program.

F. PROGRAMMING PARADIGMS
Programming paradigms are the styles of programming that a programmer
uses to come up with the output out of a project or problem.
1. PROCEDURAL

Procedural paradigm is running the codes line by line without

skipping any of the statements, the order of which is which statement comes
first, which is second and so on and so forth.

2. MODULAR
Modular paradigm is when you turn a huge program into small ones
with simpler codes.

3. DATA ABSTRACTION
The data abstraction paradigm is hiding the attributes of the data
making it appear more compound than more primitive.

4. OBJECT-ORIENTED PROGRAMMING
A programming methodology that represents concepts as “objects”
that have specific attributes and methods.

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Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 1
ENCIRCLE THE LETTER OF THE CORRECT ANSWER.
1. It is a set of instructions in a computer.
a. program c. hardware
b. computer d. programmer
2. It is the data that the program requires to produce the desired results.
a. output c. input
b. process d. storage
3. It is the process of typing codes into a computer.
a. testing c. design
b. analysis d. coding
4. They are the individuals who write program codes.
a. designers c. users
b. librarians d. programmers
5. It is the material that the program generates.
a. output c. input
b. process d. storage
6. It refers to the computer itself and other equipment such as keyboard, mouse,
monitor, central processing unit (CPU) and printer.
a. program c. hardware
b. computer d. programmer
7. It is a collection of information.
a. file c. data
b. computer d. requirements
8. It is a mechanism for converting input to output.
a. output c. input
b. process d. storage
9. It is another name for EXECUTES (as in executing a program).
a. runs c. codes
b. debugs d. tests
10. Complete name of your instructor.
__________________________________________________________

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Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 2
ENUMERATE THE FOLLOWING:
A. PROGRAMMING PARADIGMS
1.
2.
3.
4.

B. ELEMENTS OF PROGRAMMING
5.
6.
7.
8.
9.
10.
11.

C. TYPES OF PROGRAMMERS
12.
13.

D. STEPS IN PROGRAMMING
14.
15.
16.
17.
18.

E. TYPES OF APPLICATION PROGRAMMERS

19.
20.
21.
22.

7
UNIT 2. NUMBER SYSTEMS
Learning Objectives
At the end of the unit, I am able to:
1. develop knowledge about th different number systems; and
2. convert values into different number systems.

A. TYPES NUMBER SYSTEMS

A number system is a particular way on how to represent numbers. A
number can be consisted of a digit or a series of digits. When you say digit, it is
only one symbol that represent a number. The number 143 is consists of 3 digits,
1, 4 and 3. The value of each digit position is called weight. DECIMAL WEIGHTS
represents the value of each digit position of a decimal number such as UNITS
(100), TENS (101), HUNDREDS (102), THOUSANDS (103), etc. BINARY
WEIGHTS are enumerated as UNITS (20), TWOS (21), FOURS (22), EIGHTS (23),
and so on. HEXADECIMAL WEIGHTS are enumerated as UNITS (160),
SIXTEENS (161), and so on.

The Decimal Number System is the most common out of all the number
systems because it is used in our everyday living. Since it is using 10 digits,
therefore, it has a base of 10. The BINARY Number System uses only two digits,
0 and 1, so it has a base of 2. HEXADECIMAL means 16. The HEXADECIMAL
Number System uses 16 digits, so the base is also 16.

B. CONVERSIONS
Any particular number system can be converted to another number system
by following the steps in conversion.
1. BINARY NUMBER TO DECIMAL NUMBER CONVERSION
STEPS:
a. Write the Binary number downwards.
b. Multiply each digit with the corresponding binary weights starting with
UNITS from the bottom.
c. Add the products. The sum is the corresponding decimal number.

8
Example No. 1. CONVERT 1110102 TO DECIMAL.

Example No. 2. CONVERT 110010012 TO DECIMAL.

Solution:

2. DECIMAL NUMBER TO BINARY NUMBER CONVERSION

STEPS:
a. Write the given decimal number and divide it by 2.
b. Write the quotient and the remainder.
c. Divide the quotient by 2.
d. Repeat steps b and c until the quotient is 0.
e. Write the digits from bottom to top. The resulting string will be the
binary number.

9
Example No. 1. CONVERT 8210 TO BINARY.
Solution:

The process of successive division by 2 is called DOUBLE-DABBLE.

Example No. 2. CONVERT 52710 TO BINARY.

Solution:

10
3. HEXADECIMAL NUMBER TO BINARY NUMBER CONVERSION
To convert Hexadecimal number to Binary, the TABLE OF
EQUIVALENCES should be used.
TABLE OF EQUIVALENCES
HEXADECIMAL BINARY DECIMAL

0 0000 0
1 0001 1
2 0010 2
3 0011 3
4 0100 4
5 0101 5
6 0110 6
7 0111 7
8 1000 8
9 1001 9
A 1010 10
B 1011 11
C 1100 12
D 1101 13
E 1110 14
F 1111 15

STEPS:
a. Write the digits of the hexadecimal number separately.
b. Using the Table of Equivalences, write the corresponding binary
equivalent under each digit.
c. Cross-out the unnecessary zeroes. The UNNECESSARY ZEROES
can be found at the leftmost digit.
d. Write the binary digits as a string.

11
Example No. 1. CONVERT 14316 TO BINARY.
Solution:
14316 = _101000011_2

1 4 3

0001 0100 0011

Example No. 2. CONVERT 20D16 TO BINARY.

Solution:

4. BINARY NUMBER TO HEXADECIMAL NUMBER CONVERSION

STEPS:
a. Group the digits of the binary number from the last digit by 4’s.
b. If the last group is less than 4 digits, add zeros to the left to make it
4. Ex. 11, add 2 zeroes to make it 0011. All the groups should have
4 digits.
c. From the Table of Equivalences, write below the corresponding
hexadecimal number equivalent of each group.
d. Write the hexadecimal digits as a string.

12
Example No. 1. CONVERT 1011001012 TO HEXADECIMAL.
Solution:
1011001012 = _165_16
101100101

0 0 01 0 1 1 0 0 1 0 1
1 6 5
1011001012 = _165_16

Example No. 2. CONVERT 11101011012 TO HEXADECIMAL.

Solution:

5. HEXADECIMAL NUMBER TO DECIMAL NUMBER CONVERSION

13
Example No. 1. CONVERT 34B16 TO DECIMAL.
Solution:
34B16 = __843__10

3 x 162 = 768
4 x 161 = 64
B = 11 x 160 = 11
--------
843

Example No. 2. CONVERT C3B16 TO DECIMAL.

Solution:

6. DECIMAL NUMBER TO HEXADECIMAL NUMBER CONVERSION

STEPS:
a. Divide the hexadecimal number by 16.
b. Write the quotient and the remainder.
c. Divide the quotient by 16.
d. Repeat steps b and c until the quotient is 0.
e. Write the digits from bottom to top. The resulting string will be the
binary number.

14
Example No. 1. CONVERT 19510 TO HEXADECIMAL.
Solution:
19510 = __C3__16

16 |_195_
16 |__12_ r 3
0 r 12 = C

Example No. 2. CONVERT 283110 TO HEXADECIMAL.

Solution:

15
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 3
DO THE FOLLOWING CONVERSIONS:
1. 11210 = ___________2 2. 5910 = ___________2

3. 110110 2 = _________10 4. 111002 = _________10

5. 12C16 = _________10 6. F10216 = _________10

16
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 4
DO THE FOLLOWING CONVERSIONS:
1. 10E16 = _________2 2. 9A16 = _________2

3. 94110 = _________16 4. 76210 = _________16

5. 1101100112 = _________16 6. 10101002 = _________16

17
UNIT 3. PROGRAMMING LANGUAGES
Learning Objectives
At the end of the unit, I am able to:
1. Understand the history of programming languages;
2. Identify the type of high-level programming;
3. Understand the control structures; and
4. Create a flowchart.

A. HISTORY

1. Machine Language
The first computer programming language ever developed was the
machine language. The machine language is written with binary digits,
that is, 0s and 1s. Machine language is the sole programming language
which is recognized by the computer, though it is very tedious and the
tendency of making errors is extremely high. Machine language codes can
only be written by expert low level programmers.

2. Assembly Language
The assembly language is a slightly high-level language than the
machine language. This programming language uses mnemonics.
Mnemonics are memory aids which are abbreviated alphabetic
instructions. The programmers developed this language so that they can
easily understand their programs as compared to the ones they wrote using
machine language. An assembler is used to convert codes written in
assembly language into machine language.

3. High-level Language
The high-level language is a program written in English words that
even common people can understand. Most of the programming languages
today like C language, C++, Java and others are high-level languages. For
the computer to understand and execute a program written in high-level
language, it should first be compiled by a compiler program into object code
and then combined into a single executable program using a linker.

18
B. TYPES OF HIGH-LEVEL PROGRAMS

1. Procedure-oriented programs
When you say procedure-oriented, the program is focused on its
step by step process of solving a given problem.
Examples:

a. COmmon Business-Oriented Language (COBOL)

b. Pascal Language
c. C Language
d. BASIC

2. Object-oriented programs
The object-oriented program focuses on transforming real-life
objects into its digital representation. Examples of objects in
programming are text boxes, frames, check boxes, buttons and combo
boxes.
Examples:
C++ Visual Basic Java

C. CONTROL STRUCTURES
Control structures are statements which oversee the flow on how a
program is executed. The program’s logic depends on these control
structures that is why they are sometimes called OGIC STRUCTURES.
1. Sequence Structure

EXAMPLE:
Make an algorithm that will show the process by which a
Grade I student does his daily routine from the time he wakes up to the
time he goes to school.

19
 SOLUTION:

1. Wake up early.
2. Eat breakfast.
3. Brush his teeth.
4. Take a shower.
5. Put on his uniform.
6. Go to school.

2. Selection Structure
In this structure, the execution of a statement or a block of
statements will be dependent on outcome of comparing the values in an
expression. The selection structure is also called as a DECISION
STRUCTURE.

EXAMPLE:
From the previous example, make a selection structure in the part
where the Grade I student is putting on his uniform. Every Wednesday
is PE day, so the algorithm include a selection statement that will make
him put on his PE uniform on a Wednesday.

SOLUTION:
1. Wake up early.
2. Eat breakfast.
3. Brush his teeth.
4. Take a shower.
5. If (today is Wednesday)
Put on his PE uniform
else
Put on his school uniform
end if
6. Go to school.

3. Repetition Structure
The Repetition Structure is sometimes called LOOPING. In this
structure, the statement or block of statements are done again and again
until the result of the comparison expression becomes “FALSE”.

20
 EXAMPLE:
Make the algorithm above show that the process of going to
school will be repeated 5 times to cover the 5 school days of the week.
SOLUTION:
1. Repeat 5 times

• Wake up early.

• Eat breakfast.

• Brush his teeth.

• Take a shower.

• If (today is Wednesday)
Put on his PE uniform
else

Put on his school uniform

end if

• Go to school.

end repeat

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D. FLOWCHART
Flowchart is a guide in creating programs. It uses symbols to show the step
by step process of how you can develop a solution to a certain problem. The table
below lists the commonly used flowcharting symbols and their corresponding
functions.

SYMBOL NAME FUNCTION

Used to denote the beginning and

TERMINAL
ending of a flowchart.

Used to show the next step in the

FLOWLINES
flowchart.

Used for declaring and initializing

PREPARATION
variables and/or constants.

Used for entering data and for

INPUT/OUTPUT
displaying the results.

Used for assigning values and

PROCESS
calculations.

Used for branching. Shows which

DECISION-
alternative will be followed by the
MAKING
flowchart.

Used to connect a part of a flowchart to

CONNECTOR
another at the same page.

22
EXAMPLE No. 1:
Create a flowchart that will display “HeLLo WoRLd”.

START

print “HeLLo WoRLd”

END

SAMPLE OUTPUT:

HeLLo WoRLd_

23
EXAMPLE No. 2:

Draw a flowchart that will show your name, and age in the monitor.

START

print “Dayle Xylia F. Florentino”

print newline
print “16 years old”
print newline

END

SAMPLE OUTPUT:

Dayle Xylia F. Florentino

16 years old
_

In this example, the first print statement (Dayle Xylia F. Florentino) was displayed
on the screen, then a newline was printed, so the cursor transferred to the next
line. The third print statement (16 years old) was displayed on the screen. A
newline was next printed so the cursor appeared on the next line of the last printed
line.

24
EXAMPLE No. 3:

My age is: 16
You are too young to drink!!!_

In this flowchart, variable age was first declared. Then, the prompt (My age
is: ) is printed on the monitor. The user entered 16 and the vaue was stored in
variable age. 16 was compared to 18 (is age < 18?). Since the result is yes, the
message (You are too young to drink!!!) was displayed and the cursor remained
after the last printed character.

25
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 5
I. ANSWER THE FOLLOWING QUESTIONS.

1. Which language uses binary digits?

________________________________________________________
2. What is the flowcharting symbol used to declare variables?
________________________________________________________
3. Which control structure chooses from alternatives?
________________________________________________________
4. What are the three examples of Object-oriented program?
________________, ________________, and __________________
5. What type of program is focused on its step by step application?
_______________________________________________________
6. What is the flowcharting symbol used to connect parts of a program?
________________________________________________________
7. What is the meaning of the acronym BASIC?
________________________________________________________
8. What is the flowcharting symbol used to mark the start and end of a
flowchart?
________________________________________________________
9. What is another name for Loop Structure?
________________________________________________________
10. What is the meaning of the acronym CoBOL?
________________________________________________________
11. What is the visual representation of a program?
_______________________________________________________
12. What is the flowcharting symbol for branching?
_______________________________________________________
13. What is a slightly advanced language than the machine language?
_______________________________________________________
14. What are memory aids which are abbreviated alphabetic instructions?
_______________________________________________________
15. What is the flowcharting symbol used for computations and assigning
values?

26
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 6

27
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 7

28
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 8

29
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 9
Two numbers will be input values from the user. Create a flowchart
that will compute; then, display the sum of the numbers on the screen.
Show the sample output.

30
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 10

31
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 11

32
UNIT 4. C++ PROGRAMMING
Learning Objectives
At the end of the unit, I am able to:
1. identify the parts of a simple C++ program;
2. learn about different C++ applications;
3. create and compile C++ programs;
4. debug a C++ source code; and
5. execute a C++ program.

For the programs that you will be writing in this programming subject, you
will be using C++. C++ is a high-level programming language which uses codes
that are easier for common people to understand.

Step by step tracing of the code (debugging) is necessary so that you may
know precisely where errors are occurring. A debugger is a tool that helps
programmers trace programs and find probable causes of errors. It cannot correct
the errors in your program. It only assists the programmer find errors while in the
process of programming. The graphically based debugger environment is a part of
the Integrated Development Environment (IDE).

The simple structure of a C++ program is shown below.

33
Examples of IDEs that you can use :

• for desktops and laptops: Code::Blocks, text editor with GNU compiler;
• for Android: cppDroid, cxxDroid, C++ Compiler;
• for iOS: cppCode

A. APPLICATIONS FOR DESKTOPS/LAPTOPS

1. CODE::BLOCKS
Code::Blocks is an open source free IDE which is used for C++
Programming which uses a text editor and a compiler. It will allow you to create
and test your programs from an easy to use development environment.
OPENING Code::Blocks

1. From the desktop, look for the Code::Blocks icon. Double click the icon.
(If you cannot find the Code::Blocks icon in the desktop, you can click the
START button and then look for Code::Blocks and click it).

34
 The figure below will be shown in your monitor.

2. Click the File Menu from the Menu bar and then, click New, and proceed
to clicking Project. You will be presented with a new window like the one
below.

3. Choose Console Application by double clicking its icon. Your screen will
now look like this Figure:
35
4. Choose C++ and then, click Next.

36
5. Type the title of the project (example, LabEx1) and then, click Next. The
figure below will be your next screen.

6. Click Finish. You will now be presented with the Code::Blocks Editor
screen.

37
THE Code::Blocks SCREEN

OPENING Code::Blocks TEXT EDITOR

From the Code::Blocks Screen, click Projects on the Management Area,

then find the file you have created, double click Sources, then double click
main.cpp. The Work Area will display the basic structure of a simple C++ program.
You can erase the unnecessary statements in the given program or you can
completely erase all the data and create your own program. To familiarize yourself
in creating a C++ program, erase the data completely. Type this simple program,
following the structure as you can see it.

38
EXAMPLE OF A SIMPLE C++ PROGRAM

#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
cout<<”Aloha…”<<endl;
cout<<”Hello…”<<endl;
cout<<”Kumusta…”<<endl;

return EXIT_SUCCESS;
}

#include <iostream>
#include <cstdlib>

The first two lines are the declaration of libraries. The number sign or hash
sign (#) indicates that the line is a directive for the compiler’s preprocessor.

These libraries should be invoked in your program so that commands that you are
bound to use in your codes will be able to function. The <iostream> contains the
basic input and output commands of C++ while the <cstdlib> includes the
namespace std.

using namespace std;

A namespace is an abstract container or environment created to hold a

logical grouping of unique identifiers or symbols. namespace std is a namespace
for the standard library where common C++ commands are included. This
declaration says that we will be accessing the functionality of the standard
namespace.
int main()

This line is the main method of your C++ program where all the statements
will be executed by the program and is enclosed by opening ({) and closing (})
braces.

39
cout<<”Aloha…”<<endl;
cout<<”Hello…”<<endl;
cout<<”Kumusta…”<<endl;

The sixth, seventh and eighth lines are C++ output statements. Every C++
statement should end with a semicolon( ; ). cout is a command which will display
anything inside the quote and unquote marks. It is followed immediately by an
insertion operator (<<) and then, the quote, the literal string or text to be printed,
the unquote and a semicolon. Literal strings are texts which are inside the quote-
unquote symbols and will be displayed as is, or the way the strings are written or
coded. These literal strings will be directed to the standard output stream,
usually, the screen or monitor. The endl command will print a newline to the
output. This means that the cursor will go down the next line of the screen. It is just
like pressing the Enter Key when typing in a text editor.
return EXIT_SUCCESS;
The ninth line is a statement that causes a main function to end. This
statement is translated as “the program has functioned as expected and is
deemed a success.”

• return exit function

• EXIT_SUCCESS constant with an integer value passed on to the
Operating System when the program terminates

SAMPLE PROBLEM:

Make a program which will display the names of your schools during
elementary, high school and college years.
#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
cout<<”San Isidro Central School”;
cout<<”Central Luzon Polytechnic College”;
cout<<”Adamson University”;

return EXIT_SUCCESS;
}

40
2. TEXT EDITOR AND COMMAND LINE INTERFACE

TEXT EDITOR
Use notepad as your text editor. To open notepad, click Start, then choose
All Programs and Accessories. Then click on Notepad.

The computer will display the Notepad window.

You can now write the source code in the Notepad window. To run the
program that you have encoded using your text editor, you have to use a Compiler
to execute the program.

41
COMPILER
For the compiler, you can install MinGW in your desktop using the following
steps:

1. Type https://sourceforge.net/projects/mingw/files/ in your browser.

2. Click Download mingw-get-setup.exe.

3. Double-click the icon.

4. Click Install.

42
 This window will be displayed on your screen.

5. Click Continue.

6. Click Continue.

43
7. Click x in the MinGW Installation Manager.

8. Click Review Changes.

9. Click Apply.

44
 The following windows will be displayed on your screen.

10. Click Close.

1. Edit the Environment Variable Path

o Click Start
o Click Control Panel / for windows 10- Search Control Panel
o Click System / for windows 10 - Click System and Security , Click
System
o Click Advance system settings; you will see

45
o Click Enviroment Variables...; you will see

46
11. Click OK three times.

47
Create a source code and compile it on the Command Line Interface

1. Search for the Command Prompt and click to select.

2. Your screen should look like this:

3. Type md c:\CPP to create a folder and hit Enter *md(make directory)

48
4. Type cd c:\CPP to change directory to change the directory to CPP so
that the sorce file will be saved in that directory.

5. Type notepad hello.cpp

Click Yes to start coding using notepad.

Then, type this c++ code.

Save or hit CTRL S.

49
 You have successfully saved your source code.

Go back to the command prompt. Type dir to display the contents of a

c:\hello directory.

Then type g++ -o hello.exe hello.cpp tOr type g++ hello.cpp.

Compiling with g++

To run the hello.exe program, type hello.exe or hello or simply type a at the
command prompt.
Output:

Congrats, you have compiled and run a C++ program by using the
command-line tools.

50
B. C++ Application for iOS Devices

1. CppCode

Download, Installation, and Opening of CppCode

1. From the App Store, download and install CppCode.

2. Upon opening the application, the main screen will appear as described in
the figure below.

51
3. To create a new C++ project, click on More on the upper right hand of the
screen then choose Project. Next, choose New Project.

52
4. After tapping New Project, a new window will appear. Input the file name
you want in the text field then choose Create C++ Project.

53
5. Upon choosing Create C++ Project, the text editor will appear and you can
now type the C++ code. Please note that for special characters such as
quotation marks (“ “) and single quotes (‘ ‘), please use the symbols
interface that is provided with the text editor. Otherwise, you might
encounter errors.

Coding Area

Symbols
Toggle to
Interface
hide/show
keyboard

54
6. Once done, tap on the hide keyboard symbol, then tap Save. You will be
prompted if the save is successful. If there are errors, tap on the editor
again to enable the keyboard and correct the errors. If there are no errors,
tap Compile and wait for the prompt that the compilation is successful.
Then, tap Run. A terminal window will appear with the code’s output.

55
Opening Existing Projects

From the main screen, tap Open then Open project then choose C++ on
the upper right hand corner of the screen. All existing projects will be listed. Then
tap the > symbol found at right of the file that you want open. The text editor that
contains the code will appear.

File Click the symbol

name to open file

56
C. APPLICATIONS FOR ANDROID DEVICES

1. Cxxdroid

1. Download and install Cxxdroid from Google Play Store.

57
USING Cxxdroid

On your android device, locate The image above is the default

and click the Cxx icon to start work area of Cxxdroid upon
using the app. opening the app.

58
The default and existing codes on After running or executing the
work area can be replaced by the program by pressing the play
desired coding of your own. button/icon on the lower right of
the screen

59
 On the upper right corner, click On the upper right corner, click
the folder icon to toggle the the three dots (Vertical Ellipsis) to
options on how to manipulate the open another option set such as
project. undo, redo, search and go to line.

60
Click the three dashes icon found Appearance of the app such as
on the upper left corner of the themes, font size and font styles
app to display other features of are customizable.
the app.

61
 Ready made samples of basic Sharing capability via text
C++ coding are also available in message, Bluetooth, social media
this app. platforms, etc. is also available in
this app.

62
2. CppDroid

Download and install

Launch the Google Play application in your android device and search for
CppDroid.

After installing CppDroid, you can see the launch icon of CppDroid in your
screen.

63
 Upon opening the application, the main screen will appear as described in
the figure below.

64
Creating Project

Click the Menu Icon represented by three dots

aligned vertically and select Project -> New.

65
Input project name (ex. LabEx1), then click CREATE C++ PROJECT.

66
Writing, Compiling and Running a Code

You can now start your coding in the IDE’s Edior Tab and write codes in
its workspace.

67
 After writing the program, tap on Compile (Lightning
Icon) to compile the written code.

After the compilation is successful, tap on Run and it will execute the
program. The figure presents the output preview:

It can be helpful for you to run and test C/C++ on your device at any time.

68
3. C++ Compiler IDE

Installing C++ Compiler IDE

From Google Play Store, download and Install C++ Compiler IDE.

69
Using C++ Compiler IDE

The main screen will be displayed as defined in the following figure when
the application is opened.

text area

70
 To create a new project for C++, click “New” at the bottom on the phone
screen. Now you can start to construct the code. After you have constructed the
code, click “Save” so that project will be stored. If no errors exist, click “Compile”
and wait for the prompt to successfully compile. When you click “Run” the output
of the code will be displayed in the phone’s screen.

71
output
output

72
Opening Existing Projects

From the phone screen, click “Open”, then select the existing file project
you want to view.

select

existing project

click

73
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Laboratory Exercise No. 1

Make a C++ that will display I LOVE YOU in five different languages.

74
UNIT 5. IDENTIFIERS, VARIABLES AND CONSTANTS
Learning Objectives
At the end of the unit, I am able to:
1. define and classify identifiers;
2. use and apply appropriate data types for variables and constants;
3. name, declare and initialize variables and constants;
4. use assignment statements and expressions; and
5. apply mathematical operators in building a program.

A. IDENTIFIERS
Identifiers are names given to variables and constants. In C++, an
identifier can be a letter or series of letters, numbers or underscore. No other
symbol can be used for valid identifiers. The identifiers should not start with a
number. You cannot use reserved words in C++ as identifiers since they all have
specific functions. The list of reserved words is given below:

C++ is a case sensitive programming language, therefore, identifier

rate, Rate and RATE are not the same identifiers.

75
EXAMPLES OF VALID IDENTIFIERS

Age redRibbon year123 ako_ikaw_tayo ARVEE

B. DATA TYPES
Variables and constants use memory locations to store data and the size of
which will be depending on the data type that these two identifiers will hold. This
is the reason why you cannot use variables and constants unless you have
declared them first. The primitive data types which are built-in in the C++
programming language are listed below with their corresponding size.

The short, long and the int data type will store integers or whole
numbers with no decimal place values. The float and the double data type will
hold real numbers or numbers with decimal parts. You cannot use the value of a
char data type in mathematical and logical computations. Character values are
enclosed with a pair of apostrophes( ‘ ‘ ). The bool data type will store the
values true or false. The string data type can hold values which are series of
letters, numbers and symbols, or it can hold a null string which is a space inside
the quote-unquote symbols (“ “). The value of a string data type is enclosed with
quote-unquote.

76
C. VARIABLES
Variables are names given to memory locations that you will be utilizing in
order for you to store data. You can change the value of a variable as you go along
in your coding but as mentioned earlier, a variable should be declared first at the
start of the program before you can use it. As for conventionality, if a variable name
you want to use is consisted of two or more words, use small letters to the first
word then capitalize the first letter/s of the succeeding word/s. The variable will
appear like it has humps thus, it is said to be using camel case format.

Examples:

interestRate numberOfHoursWorked taxRate

To declare a variable (so that the computer can allocate memory space for
it), use the following syntax:

data_type variable_name;

Examples::
int x; // Declares x as a variable which can only store
//whole numbers
float interest_rate; //Declares interest_rate to be a float variable;
char alias; //Declares alias as a variable which can only hold
// a single character (number, letter or symbol)

If you are using variables with the same data type, you can declare
individually or together in one declaration statement:

Example:
short rv;
short df; short rv, df, dx;
short dx;

In declaring variables, bear in mind that it would store values of certain

entities, therefore, give variable names in relation to the entity it will
represent. For example, if you want storage for the rate of interest, do not
use hourly_rate as variable. Instead you can use interest_rate, so that if for
some instance another person other than you will look at your program, it
will not be difficult for him to comprehend your code.

77
INITIALIZATION OF VARIABLES
You can also declare a variable and at the same time put an initial value to
it. To do that, follow this syntax:

data_type variable_name = initial_value;

Examples:

int number = 10;

double rating = 7.53;
char x = ‘R’;

D. CONSTANTS
A constant is an identifier which can store unchanging values. The same
thing as in variables, constants should be declared first at the beginning of your
program before you can utilize them. You can declare constants before the main
method of a C++ program like this:

#define PI 3.1416
#define LETTER ‘a’

If you want to declare a constant inside the main method, use the following
syntax:

const data_type CONSTANT_NAME = value;

Examples:

const double PI = 3.1416;

const char LETTER = ‘a’;

To easily distinguished constant from variable, use capital letters when

naming constants. If two or more words are used, separate the words with
underscores(_).

78
E. ASSIGNMENT STATEMENTS AND ASSIGNMENT
EXPRESSIONS
You can also assign values to your variables using the assignment
operator (=).

Example No. 1: SYNTAX: variable = value;

a = 5;
r = 20;
v = ‘c’;
e = 3.28;
e = 0.1;

Example No. 2: SYNTAX: variable = variable;

t = a;
age = num;
nextRate = oldRate;

Example No. 3: SYNTAX: variable = expression;

x = 5 * (3 / 2) + 3 * 2;
area = PI * radius * radius;

Notice that in the assignment statement, the variable is located at the left of
the assignment operator. The right side, however, can be a value, another variable
or an expression. An expression in C++ is a mathematical expression which is
consists of values, variables and operators which evaluates to a single value.

INCREMENT/DECREMENT

A variable can have an increment or decrement. Increment is the process

of increasing the value of a variable by addition. The usual increment is by 1:
r = r + 1;

The shortcut form of the above statement is as follows:

r++;

On the other hand, decrement is the process of decreasing the value of a

variable. Just like in the increment, the usual value of decrement is 1. For example:
w = w – 1;
79
 The decrement shortcut are like these:
w--;

Increment and decrement can also use other numbers aside from 1. If
variable x is incremented by 3, the corresponding statement will be like this.

x = x + 3;

or

x += 3;

Consequently, if variable y is to be decremented by 5, the statement will be:

y = y – 5;

or

y -= 5;

F. MATHEMATICAL OPERATORS

C++ also uses mathematical operators the list of which appears in the table
below:
SYMBOL NAME FUNCTION
+ Plus(Addition) Used in getting the sum of numbers
- Minus(Subtraction) Used in getting the difference of numbers
* Asterisk(Multiplication) Used in getting the product of numbers
/ Slash(Integer division) Used in getting the quotient of numbers
Used in getting the remainder of the
% Modulo
division

ORDER OF PRECEDENCE

Just like in College Algebra, the mathematical operators in C++ have an

order of precedence. The Order of Precedence tells which operator should be
executed first. The following lists the mathematical operators and their levels in the
Order of Precedence.

80
 LEVEL OPERATOR/S

I ( )

II * / %

III + -

The computer will first evaluate the level I operator which is a pair of
parentheses. After all the operators inside the parentheses were evaluated, the
level II operators will be processed next, then followed by the level III operators.

If the are operators under the same level, evaluate first the operator on the
left of the expression until all of the same-level operators are evaluated.

EXAMPLES:

1. x = 4324 % 7 – 2 * (15 – 30 / 6) + 84 / 3
x = 4324 % 7 – 2 * (15 – 5) + 84 / 3
x = 4324 % 7 – 2 * 10 + 84 / 3
x = 5 – 2 * 10 + 84 / 3
x = 5 – 20 + 84 / 3
x = 5 – 20 + 28
x = -15 + 28
x = 13

2. x = (28 – 4) * 3 / 8 – 82 % 7
x = 24 * 3 / 8 – 82 % 7
x = 72 / 8 – 82 % 7
x = 9 – 82 % 7
x=9-5
x=4

81
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 12
I. BOX ALL THE VALID IDENTIFIERS.

areaofacircle 1ABCD PI age-18

x C char true_blue

interest rate RADIUS friend RATE_HOUR

MAX VALUE virtual 2013 false

II. WRITE THE VALID DECLARATION STATEMENTS OF THE

FOLLOWING.

1. Variable x with initial value of 1.5.

______________________________________________________

2. Constant RANGE with value of 10.

______________________________________________________

3. Variable age with data type integer.

______________________________________________________
4. Variable y which will hold character value.
______________________________________________________

5. Constant LIMIT with a value of c.

________________________________________________________

82
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 13

EVALUATE THE FOLLOWING:

1. a = (250 – 13) / 41 * 6 – 450 + 182 % 14

2. r = 25 + 50 / 4 – 22 * 15 % 23

83
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 14
MAKE C++ STATEMENTS THAT WILL DO THE FOLLOWING:
1. Assign the value of variable z to variable w;

2. Assign the value you will get if you add 5 to variable x to variable y.

3. Assign the value 436 to variable d.

4. Assign the value of variable age to variable year.

5. Get the product of the values of variables a and b and assign it to

variable c.

DECLARE THE FOLLOWING AND MAKE THE CORRESPONDING

ASSIGNMENT STATEMENTS:

1. Variable num1 with a value of 5.55

______________________________________________________

2. Constant name with value DERON XYRUS

______________________________________________________

3. Variable interest rate with the value of 7.5%

______________________________________________________

84
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Laboratory Exercise No. 2

85
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Laboratory Exercise No. 3

Draw a flowchart and make a C++ Program that will compute and
display the sum and the average of 615, 512 and 48.

86
UNIT 6. INPUT/ OUTPUT STATEMENTS
Learning Objectives
At the end of the unit, I am able to:
1. create a C++ program using input/output statements.

In C++, a stream is referred to as a series of letters, characters or symbols.

The stream is handled by objects which are inside the iostream library. That is
why, you use #include <iostream> at the start of a C++ program. This #include
statement will let you use the input and output stream commands of C++.

A. THE OUTPUT STATEMENT

The output statement in C++ is consist of the reserved word cout
(pronounced as see out), followed by the insertion operator (<<), then a variable
or a value or a literal string then a semicolon. It can also be followed by a series of
variables, values and literal strings, each of which is separated by the insertion
operator. The syntax for a cout statement are as follows:

cout<<value;
cout<<variable;
cout<<”Literal String”;

COMBINATION:

cout<<value<<variable<<”Literal string”;

EXAMPLE:
cout<<10;
cout<<age;
cout<<”Choobahnez”;

cout<<”The sum is “<<sum<<endl;

The command endl (pronounced as endline) will print a line break on the
output screen. This is just like pressing the ENTER key. Another way to print a line
break is by using the quote-backslash-n-unquote (“\n”) command. \n will not
function if it is not inside the quote-unquote symbols.

87
B. THE INPUT STATEMENT
There are times when a program requires user input in order to have data
to manipulate and produce the output it desired. The C++ input stream object is
cin (see in). The cin object is followed by the extraction operator (>>) and the
variable where you want to store the value to be extracted by the cin object. The
extraction operator will stop removing cin object characters once it encounters a
linebreak (when you press the ENTER key) or a space(when you press the
spacebar) or a tab(when you press the TAB key). These are called the
whitespaces in programming. The syntax for the cin statement is:

cin>>variable;

Before using the cin statement; you should first prompt the user as to what
data should be entered. For example, you want the user to key-in the age of a
person. In the program, you will type:

cin>>age;

As seen in the output screen, only a blinking cursor will be displayed since
it is waiting for the user to type the age. The problem with this lies on the fact that
if you are not the programmer of this code, you will not have any idea as to what it
is you are supposed to input. The solution for this will be to prompt the user by
using the cout object like this:

cout<<”Please enter age: “; /*tells the user to enter age*/

cin>>age; /*gets the age given by the user*/
Your sample screen will be like this:
88
 So now, even if you are not the programmer of the code, you will know from
the prompt that you have to input an integer value which corresponds to age.

89
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 15
MAKE C++ STATEMENTS THAT WILL DO THE FOLLOWING:

1. Print the sentence, “It Is A Good Day”.

2. Input a number using variable, num.

______________________________________________________

3. Input a character and store it to variable, oneSymbol.

______________________________________________________

4. Display the sum of two numbers giving it a proper description.

5. Input the first letter of your name.

______________________________________________________

90
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Laboratory Exercise No. 4

91
UNIT 7. DECISION MAKING
Learning Objectives
At the end of the unit, I am able to:
1. write decision making statements in C++, including an if statement
and an if else statement;
2. use relational and logical operators to make decision in a program;
and
3. write other decision making statements in C++ including nested if
else and switch statement.

In making decisions in programming, the programmer should use

comparison expression and then choose a path in which to take depending on
the answer to the comparison. The SELECTION structure or DECISION structure
is used for this style of programming.

A. THE if STATEMENT
The if statement is one of the selection structures that will execute the
statements or block of statements following it when the comparison expression
evaluates to true. However, if the comparison expression evaluates to false, it will
go out of the if structure without doing anything. The if statement syntax is as
follows:

SAMPLE PROBLEM:
Make a C++ construct that will print the name and age of a person if the age
is less than 10.
if (age<10)
{
cout<<”Juan Dela Cruz”;
cout<<”The age is “<<age<<endl;

}
92
B. THE if else STATEMENT
The if else statement is a selection construct that will execute a statement
or a block of statements when the condition evaluates to true or another series of
instructions when the result of the comparison is false.

The figure below is an example of the flowchart of an if else construct.

START

age

print “Enter
age:”

get age

Y
Is print “You can have
age your driver’s license…”
>= ;
18?
N

print “Do not attempt

to drive…” ;

END

93
 The C++ structure of a simple if else statement is as follows:

if (comparison expression)
{
statement/s;
}
else
{
statement/s;
}

C. RELATIONAL OPERATORS
Relational operators are also called comparison operators because they
compare values. The result of of the comparison is a Boolean value, either a
TRUE or a FALSE.

You call a variable which stores Boolean values as a Boolean variable.

D. BOOLEAN OPERATORS
Boolean operators in C++ are operators used in Boolean values which
will result to a single Boolean value. They are also called logical operators.

94
 1. The NOT ( ! ) operator negates the value of the Boolean variable.

In the first example, the value of (1 > 2) is FALSE. Applying the NOT
operator, !(false) will evaluate to TRUE. In the second example, the value of (1 >
0) is TRUE. Applying the NOT operator, !(true) will evaluate to FALSE.

2. The AND (&&) of the operands in a Boolean comparison will result to true
if all of the operands that are being compared have true values.

95
 3. The OR (||) of the operands in a Boolean comparison will result to true if
one of the operands that are being compared has a true value.

SAMPLE PROBLEM:
Two numbers will be input values from the user. Make a C++ program that
will compute and display the sum of the numbers if the first number is in the range
of 5-10. Otherwise, compute and then display the product of the two numbers.

SAMPLE PROGRAM:
#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
int fnum, snum, sum, product;

cout<<"Enter first number: ";

cin>>fnum;
cout<<"Enter second number: ";
cin>>snum;

if (fnum >= 5 && fnum <= 10)

{
sum = fnum + snum;

cout<<"The sum is "<<sum;

}
else
{
product = fnum * snum;

cout<<"The product is "<<product;

}

return EXIT_SUCCESS;
}

96
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 16

Solution Answer
1. (x+y) > z _________________ _________________

2. y <= z _________________ _________________

3. (x+3) == y _________________ _________________

4. (z -2) > y _________________ _________________

5. y >= (z-7) _________________ _________________

6. (z<=y) && (y>x) _________________ _________________

7. !(y > x) _________________ _________________

8. (x<=y) || (y>=z) _________________ _________________

9. (x==2) && (y>=5) _________________ _________________

10. (z<x) || (!(z>y) _________________ _________________

97
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 17

98
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 18

99
 Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Laboratory Exercise No. 5

Seat No.: _________________ Rating: ________________

CHAPTER 7
100
 OTHER DECISION MAKING STATEMENTS

E. THE nested if-else STATEMENT

If there are more than two alternatives or choices, you can use the nested
if statement.

if (comparison expression)
{
statement/s;
}
else
if (comparison expression)
{
statement/s;
}
else
if (comparison expression)
{
statement/s;
}

The depth of a nested if statement is dependent on the given problem.

SAMPLE PROBLEM:

Make a C++ program that will compute for the average of the grades of a
high school student by getting the average of his grades from first grading period
to the fourth, and display the letter grade using the following conversions: 91 – 100
= ‘A’, 81 – 90 = ‘B’, 71 – 80 = ‘C’, 70 and below = ‘F’. It should print the average of
the grades of the student and his letter grade.

101
FLOWCHART:

START

grade1, grade2, grade3,

grade4, lgrade, ave

print “Input first grading

period grades:”

get grade1

print “Input second

grading period grades:”

get grade2

print “Input third grading

period grades:”

get grade3

print “Input fourth

grading period grades:”

get grade4

102
 A

ave = (grade1 + grade2

+ grade3 + grade4)/4

X
print “The
average is: “,
is lgrade = ‘F’ END
ave<=7 ave
0?
Y
print “The letter
N grade is “,
lgrade
is lgrade = ‘C’
ave<=8 X
0?
Y

is lgrade = ‘B’
ave<=9
0? Y

N
lgrade = ‘A’

ANOTHER SAMPLE PROBLEM:

Write a C++ program that will ask for a number of hours that an employee
had worked for a month and his or her rate per hour. Then compute and print the
netpay based on the following:

Basic Pay Tax

10000 or less 5% of Basic Pay
10001-20000 7.5% of Basic Pay
More than 20000 10% of Basic Pay

103
Sample Output 1 (for basic pay of 10000 or less)
SIMPLE COMPUTATION OF AN EMPLOYEE’S NETPAY
Enter your number of hours worked in a month: 100
Enter your rate per hour: 90
Basic Pay = 9000 pesos
Tax @ 5 % = 400 pesos
NET PAY = 8600 pesos

Sample Output 2 (for basic pay of 10001-20000)

SIMPLE COMPUTATION OF AN EMPLOYEE’S NETPAY
Enter your number of hours worked in a month: 100
Enter your rate per hour: 150
Basic Pay = 15000 pesos
Tax @ 7.5 % = 1125pesos
NET PAY = 13875 pesos

Sample Output(for basic pay of more than 20000)

SIMPLE COMPUTATION OF AN EMPLOYEE’S NETPAY
Enter your number of hours worked in a month: 160
Enter your rate per hour: 300
Basic Pay = 48000 pesos
Tax @ 10 % = 4800 pesos
NET PAY = 43800 pesos

SOURCE CODE

#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
int nhw, rpr, tax=0, bp=0, np=0;

cout<”SIMPLE COMPUTATION OF AN EMPLOYEE’S NETPAY\n”

cout<<”Enter your number of hours worked in a month: “
cin>>nhw;
cout<<”Enter your rate per hour: ”;
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 cin>>rph;

bp=nhw*rph;

cout<<”Basic Pay = “<<bp<<” pesos\n”;

if(bp <=10000)
{
tax = bp*.05;

cout<< “Tax @ 5 % = “<<tax<<” pesos\n”;

}
else if(bp<=20000)
{
tax = bp*.075;

cout<< “Tax @ 7.5 % = “<<tax<<” pesos\n”;

}
else
{
tax = bp*.1;

cout<< “Tax @ 10 % = “<<tax<<” pesos\n”;

}
np=bp-tax;

cout “NET PAY = “<< NP<< “pesos”

return EXIT_SUCCESS;
}

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Seat No.: ____________________________ Rating: ________________

Name: ______________________________ Date: _________________

Seatwork No. 19
Using the nested if else statement, create a c++ program that will
compute for your electricity bill based on the following data:

KILOWATT USED ELECTRIC BILL

20 or less ₱5.50/kwh
21 – 50 ₱10.00/kwh
More than 50 ₱15/kwh

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 Seat No.: ____________________________ Rating: ________________

Name: ______________________________ Date: _________________

Laboratory Exercise No. 6

B. SWITCH STATEMENT
107
F. THE switch STATEMENT

The switch statement is an alternative for if else statement. It looks for a

match among the cases and executes the statements inside the match. If no match
is found, it will execute the default statements.
switch (variable)
{
case value_1:
{
statement(s)_1;
break;
}
case value_2:
{
statement(s)_2;
break;
}
:
:
case value_n:
{
statement(s)_n;
break;
}

default:
{
statement(s);
}
}

SAMPLE PROBLEM 1:
Write a c++ program that inputs the course code of a student then outputs
his/her course based in the following data:

CODE COURSE DESC

I or i Infotech
M or m Managemnent
N or n Nursing
E or e Engineering
D or d Education
A or a Architecture
C or c Crim
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SAMPLE OUTPUT:

Good Day!
Choose a course code (I, M, N, E, D, A or C) and i will tell you its equivalent
course description.
Enter your choice now : A
The course code you have chosen is A
The equivalent course description is Architecture.
Thank You!

SOURCE CODE:
#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
char cc;

cout<<”Good Day\n”;
cout<<”Choose a course code (I, M, N, E, D, A, or c) and i will tell you its
equivalent course description\n”;
cout<<”Enter your choice now : “;
cin>>cc;

switch (cc)
{
case ‘I’ : case ‘i’:
{
cout<<”The course code you have chosen is “<<cc;
cout<<”\nThe equivalent course description is Information
Technology\n”;
break;
}
case ‘M’ : case ‘m’:
{
cout<<”The course code you have chosen is “<<cc;
cout<<”\nThe equivalent course description is Management\n”;
break;
}

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 case ‘N’ : case ‘n’:
{
cout<<”The course code you have chosen is “<<cc;
cout<<”\nThe equivalent course description is Nursing\n”;
break;
}
case ‘E’ : case ‘e’:
{
cout<<”The course code you have chosen is “<<cc;
cout<<”\nThe equivalent course description is Engineering\n”;
break;
}
case ‘D’ : case ‘d’:
{
cout<<”The course code you have chosen is “<<cc;
cout<<”\nThe equivalent course description is Education\n”;
break;
}
case ‘A’ : case ‘a’:
{
cout<<”The course code you have chosen is “<<cc;
cout<<”\nThe equivalent course description is Architecture\n”;
break;
}
case ‘C’: case ‘c’:
{
cout<<”The course code you have chosen is “<<cc;
cout<<”\nThe equivalent course description is Criminology\n”;
break;
}
default:
{
cout<<”The course code you have chosen is “<<cc;
cout<<”\nIt is an INVALID course code.\n”;
}
}

cout<<” Thank you!”;

return EXIT_SUCCESS;
}

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SAMPLE PROBLEM 2:

Make a C++ program that will create a Q and A using the Switch
statement.

SOURCE CODE:
#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
char answer;

cout<<”What do you call a 2D shape in geometry, having 4 sides and 4

corners. Its two sides meet at right angles ”;
cout<< "a - RHOMBUS ";
cout<< "b - PARALLELOGRAM";
cout<< "c - RECTANGLE";
cout<< "d - TRAPEZIUM";
cin>>ans;

switch(answer)
{
case 'a':
{
cout<< “WRONG”;
break;
}
case 'b':
{
cout<< “WRONG”;
break;
}
case 'c':
{
cout<< “CORRECT”;
break;
}
case 'd':
{
cout<< “WRONG”;
break;
}
default:
{
cout<<"invalid input";
}
}

return EXIT_SUCCESS;
}

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SAMPLE PROBLEM 3:
Using the switch statement create a c++ program that compute your water
bill based on the account classification.

SOURCE CODE:
#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
int cnum, prevR, presR, bill;

cout << "Choose the number corresponding to the classification of your

account";
cout<< "[1]- RESIDENTIAL";
cout<< "[2] COMMERCIAL ";
cin>>cnum;

switch(cnum)
{
case 1:
{
cout<< "RESIDENTIAL";
cout<< "Enter the previous reading of your account :";
cin>>prevR;
cout<< "Enter the present reading of your account :";
cin>>presR;

bill=(presR-prevR)*20;

cout<< "Your bill is : "<<bill;

break;
}

case 2:
{
cout<< "COMMERCIAL";
cout<< "Enter the previous reading of your account :";
cin>>prevR;
cout<< "Enter the present reading of your account :";
cin>>presR;

bill=(presR-prevR)*30;

cout<<"Your bill is : "<<bill;

break;
}

default:
{
cout<<"invalid input";
}
}

return EXIT_SUCCESS;
}

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SAMPLE PROBLEM 4:
Using switch statement, create a c++ program that provide the four
mathematical operations as choices for computation.

SOURCE CODE:
#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
int fn, sn;
char ch;
float ans;

cout<<”Select the Letter of the mathematical operation you want to use”;

cout<< "A - ADDITION";
cout<< "B - SUBTRACTION";
cout<< "C - MULTIPLICATION";
cout<< "D - DIVISION";
cin>>ch;
cout<<"Enter first number :";
cin>>num1;
cout<<"Enter second number :";
cin>>num2;

switch(ch)
{
case 'A':
{
ans = fn + sn;

cout<<ans;
break;
}
case 'B':
{
ans = fn - sn;

cout<<ans;
break;
}
case 'C':
{
ans = fn * sn;

cout<<ans;
break;
}
case 'D':
{
ans = fn / sn;

cout<<ans;
break;
}
default:
{
cout<<"invalid input";
}
}

return EXIT_SUCCESS;
}

113
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Seatwork No. 20

114
Seat No.: ____________________________ Rating: ________________
Name: ______________________________ Date: _________________

Laboratory Exercise No. 7

115
 Activity: What Did You Learn About?

Post-Assessment Test

Congratulations on completing CC101 – Computer Programming,

Fundamentals! Let’s have a little quiz to assess how much have you learned in
programming. There is no right or wrong answer. Please answer the questions
honestly by marking your responses with a check.

Do You Already Yes, I do! Maybe but I still have no

Know... unsure idea
...what is
programming?
... how to draw
flowcharts?
... how to write
codes in C++?
...what are
variables?
...the different
control structures?
... if-else and
switch statements?

Leave a short comment on which topic you enjoyed the most and why?
________________________________________________________________

________________________________________________________________

________________________________________________________________

116
 REFERENCES

Smith, Jo Ann. (2014). C++ Programs to Accompany Programming

Logic and Design. Cengage Learning.
Leona, Rodibelle F. Worktext for CC101.
CICT CC101 – Computer Programming, Fundamentals Module

https://www.tutorialspoint.com/cplusplus/
http://www.cplusplus.com/doc/tutorial/
http://www.text-editor.org/
https://www.techopedia.com/definition/3912/compiler
https://en.wikipedia.org/wiki/GNU_Compiler_Collection
https://itunes.apple.com/app/cppcode-offline-c-c++-ide/id936694712
http://www.cppcode.info/
https://play.google.com/store/apps/details?id=org.zhiyuan.zhiyuan24
https://www.google.com/url?sa=t&source=web&rct=j&url=https://play.g
oogle.com/store/apps/details%3Fid%3Dname.antonsmirnov.android.cp
pdroid%26hl%3Den%26referrer%3Dutm_source%253Dgoogle%2526u
tm_medium%253Dorganic%2526utm_term%253Dcppdroid%26pcamp
aignid%3DAPPU_1_rbENX5jpCceUr7wPwuqzuAE&ved=2ahUKEwjY8
4Gj68zqAhVHyosBHUL1DBcQ5IQBMAB6BAgPEAM&usg=AOvVaw0h
W7KjCxj0wxFIL1Tq-8ky&cshid=1594733019938
https://play.google.com/store/apps/details?id=ru.iiec.cxxdroid
http://texteditor.org/?fbclid=IwAR0phsV4QRGThctQObygLFgZAmCbH
FA9F04y896a74Bm5RNm8zTzg8ccwJY
http://www.webopedia.com/TER M/s/source_code.html

117