Object Oriented Programming 2080

Section A

Long Answer Questions
Attempt any TWO questions. [2 × 10 = 20]

1. What is a constructor? Explain its types with a suitable example. How is the constructor called in a derived class in C++? [2+6+2]

2. What is polymorphism in Object Oriented Programming? Implement a class Employee with a virtual function CalculateSalary() that returns the salary of the employee. Create two derived classes HourlyEmployee and SalariedEmployee. Override the CalculateSalary() function in both derived classes to calculate the salary of an hourly employee and a salaried employee, respectively. Write a program that creates objects of both derived classes and calls the CalculateSalary() function for each. [2+8]

3. What is operator overloading? Write a complete C++ program to overload the + operator to add two objects of class Time. [3+7]

Section B

Short Answer Questions
Attempt any EIGHT questions. [8 × 5 = 40]

4. What is the difference between public, private, and protected inheritance in C++? [5]

5. What is exception handling? Explain types of exception handling and provide a suitable example. [1+4]

6. What is a friend function? Write a program to add private members of two different classes using a friend function. [1+4]

7. Write a program to demonstrate returning an object from functions in C++. [5]

8. How is the this pointer used to resolve name conflicts between local variables and member variables in C++? Explain with an example. [5]

9. Write a program to read and write values through an object using file handling. [5]

10. What do you mean by a class template in C++? Write a program in C++ containing a function template that determines the greater number between two integer inputs and two floating-point inputs. [5]

11. Differentiate between function overloading and function overriding in C++. [5]

12. Illustrate the use of a static variable with a simple program. [5]