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Problem Set - OOP

The document describes three problem sets involving object-oriented programming in C++. The first problem set involves creating a class hierarchy for shapes with a base Shape class and derived Rectangle and Circle classes, demonstrating method overloading and overriding to calculate shape areas. The second problem set involves creating a BankAccount class to manage bank accounts with private data and public deposit/withdrawal functions, utilizing friend functions and constructors. The third problem set involves creating an Employee class with a constructor, and public methods to set employee data, add $10 to salaries under $500, and add $5 to salaries for employees working over 6 hours, validating user input.

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60 views2 pages

Problem Set - OOP

The document describes three problem sets involving object-oriented programming in C++. The first problem set involves creating a class hierarchy for shapes with a base Shape class and derived Rectangle and Circle classes, demonstrating method overloading and overriding to calculate shape areas. The second problem set involves creating a BankAccount class to manage bank accounts with private data and public deposit/withdrawal functions, utilizing friend functions and constructors. The third problem set involves creating an Employee class with a constructor, and public methods to set employee data, add $10 to salaries under $500, and add $5 to salaries for employees working over 6 hours, validating user input.

Uploaded by

kamruzaman shuvo
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Problem Set: OOP

1. Suppose, you are working on a software project that involves implementing a


geometry library in C++. The library should have a “Shape” class hierarchy to
represent different types of shapes, such as “Rectangle” and “Circle”. The “Shape”
class has the following specifications:
Member variables named “name” and “color”, Member functions named
setname(),setcolor(), displayinfo().
The derived class “Rectangle” inherited from “Shape” class has member variables
named “length” and “width” and member functions named “setDimensions()”,
“calculateArea()” (an override member function) Formula: length * width;
“displayInfo()”(an override member function). Similarly the derived class “Circle”
that has member variable “radius” and member functions
“setRadius()”,“calculateArea()” Formula: 3.14 * radius * radius; (an override member
function) “displayInfo()”(an override member function).
You need to demonstrate method overloading by implementing multiple versions of
the “calculateArea()” function in the “Shape” class based on the number and types of
parameters. Also, you need to demonstrate method overriding by overriding the
“calculateArea()” function in the “Rectangle” and “Circle” classes to provide their
specific implementation of calculating the area.
Once you have implemented the classes, you should create objects of each class, set
their attributes using the member functions, and call the “displayInfo()” function on
them to display the information of the shapes, including their calculated areas, on the
screen. Print appropriate messages to indicate which class's member function is being
called during the execution of the program. Apply polymorphism to the given criteria
by writing cpp code.

2. Problem Statement: Managing Bank Accounts

Develop a C++ program to manage bank accounts, utilizing friend functions and
constructors. The program should allow users to create and manipulate bank accounts,
including functionalities such as depositing and withdrawing funds, checking account
balances, and transferring funds between accounts. Implement a BankAccount class
with private attributes such as account number, account holder name, and balance.
Utilize a friend function to facilitate fund transfers between accounts while ensuring
appropriate access to private member variables. Additionally, design constructors to
initialize bank accounts with default or user-specified values. Develop a user-friendly
interface in the main program to interact with the bank account functionalities,
enabling users to perform transactions seamlessly. Ensure robust error handling to
manage invalid inputs and account operations effectively.
3. A class called Employee with private attributes for salary (double) and number of
hours worked per day (int). Define a constructor that initializes these attributes with
values passed as arguments.

i) Define a public method called 'getInfo()' that takes the salary and number of hours of work
per day of an employee as parameters and sets the corresponding attributes of the Employee
object.

ii) Define another public method called 'AddSal()' that adds $10 to the salary of the employee
if it is less than $500. This method should be called automatically as soon as the Employee
object is created.

iii) Define a third public method called 'AddWork()' that adds $5 to the salary of the
employee if the number of hours of work per day is more than 6.

In the main method, create an instance of the Employee class by passing the initial salary and
number of hours worked per day as arguments to the constructor. Then, call the 'AddSal()'
and 'AddWork()' methods on the Employee object to adjust the salary based on the criteria
specified. Finally, print out the final salary of the employee to the console. Add error
handling to the program by validating user input for the salary and number of hours worked
per day. Ensure that the program does not crash or behave unexpectedly in case of invalid
input. Demonstrate a C++ program for the above scenario.

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