No.
of Printed Pages : 4 I BCS 031
-
BACHELOR OF COMPUTER APPLICATIONS
(BCA) (Revised)
Term-End Examination
1:316-7 44 O December, 2017
BCS-031 : PROGRAMMING IN C++
Time : 3 hours Maximum Marks : 100
(Weightage : 75%)
Note : Question no. 1 is compulsory and carries 40 marks.
Attempt any three questions from the rest.
1. (a) What do you mean by Abstraction and
Encapsulation ? How are the two terms
interrelated ? 4
(b) What is a Reference Variable ? What is its
usage ?
(c) Identify the errors in the following code
segment : 4
int main( )
cout « "Enter two numbers";
cin » num » auto;
float area = length * breadth;
BCS-031 1 P.T.O.
(d) Why will the function given in the
following code fragment not work ? What
should be done to make it work ?
int main( )
float sum (float, float);
void calc(void)
float x, y, s;
cin » x » y
s = sum (x, y);
(e) What is a Friend Function ? What is the
significance of friend functions ? 4
(f) What do you mean by Static Data Members
of a class ? Explain the characteristics of
static data members. 4
(g) What do you understand by a Default
Constructor ? How is a default constructor
equivalent to a constructor with default
arguments ? 4
BCS-031 2
(h) What is Function Overloading ? Compare
default arguments with function
overloading.
(i) When should one derive a class publicly or
privately ? Give a suitable example in
support of your answer.
(j) What are Iterators ? List the five types of
iterators supported by STL in C++. 4
2. (a) How does the functioning of a function
differ when
(i) an object is passed by value ?
(ii) an object is passed by reference ? 7
(b) What is Operator Overloading ? List the
operators which cannot be overloaded. Give
reasons behind it. 7
(c) What is 'this' Pointer ? Explain the
significance of 'this' pointer with the help of
an example. 6
3. (a) What is the difference between call-by-value
and call-by-reference in a user defined
function in C++ ? Give an example to
illustrate the difference. 10
(b) What is Message Passing ? Explain how
message passing is used in C++
programming with example. 10
BCS-031 3 P.T.O.
4. (a) What is the difference between overloading
and overriding concepts in C++ ? Explain
the usage of these concepts with suitable
example code in C++. 10
(b) What is an Exception in C++ ? Explain how
exception handling is done in C++ with the
help of a program. What will happen if
exception is thrown outside of a try block ?
Give reasons for such a happening. 10
5. (a) Write a program in C++ to create a class
Employee with basic data members such as
name, address, age. Create a class
Part_time employee which inherits from
the Employee class. Part_time class should
have a function to display the name,
address and payment of the part-time
employee. 10
(b) Write a program in C++ to simulate the
environment of a simple calculator. 10
BCS-031 4 15,000
