bca2030 smu bca summer 2015 IInd sem assignment

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Summer 2015, ASSIGNMENT

PROGRAM – BCA (REVISED FALL 2012)

SEMESTER - 2

SUBJECT CODE & NAME - BCA2030- OBJECT ORIENTED PROGRAMMING – C++

CREDIT – 4 BK ID - B1641, MAX. MARKS - 60

Q1. Write short notes on:

a) Inheritance

b) Polymorphism 5+5 = 10

Answer:

A) Inheritance

Inheritance is one of the most powerful features of Object Oriented Programming Languages that allows you to derive a class from an existing class and inherit all the characteristics and behaviour of the

Q2. Differentiate between Classes and Objects. Write an example program to represent a class and its object. 4+6= 10

Answer:

Classes and objects are separate but related concepts. Every object belongs to a class and every class contains one or more related objects.

A Class is static. All of the attributes of a class are fixed before, during, and after the execution of a

Q3. Describe operator overloading. Which are the operators that cannot be overloaded?

5+5= 10

Answer: Operator overloading is an interesting feature of C++ that allows programmers to specify how various arithmetic, relational and many other operators work with user defined data

Q4. What are the advantages of Polymorphism? How it can be implemented? 5+5=10

Answer: Advantages

·         Code is simpler to write (and read)

·         Uniform interface for clients, i.e., type specific details only in class code, not in the client code

·         Change in

·          

Q5. Write a C++ program to swap two numbers without using a temporary variable. 10

Answer:

1.      /*

2.       * C++ program to swap two numbers without using a temporary variable

3.       */

Q6. Write A C++ program to implement class rectangle and find its area.

Answer:

#include <iostream.h> 

#include<conio.h> 

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