UNIT3

C++ FUNCTIONS

1. Program to find factorial of a given number.

2. Program to print Fibonacci Series.

3. Write a program using a function with arguments to swap the values of a pair of integers using call by reference.

4. Describe inline function in C++ with example.

5. Program for Maximum number using Friend function for two classes.

6. Program for Calculate CPI of Last two sem from SPI using Friend function for two Classes.

7. What is friend function? Give an example. What is the advantage of Overloading binary operator as friend function?

8. Define a class complex, having data member as X and Y, Define a friend function sum () to add two complex numbers and display all numbers using show () friend function.

9. Write a function power () to raise a number m to a power n. The function takes a double value for m and int value for n, and returns the result correctly. Use a default value of 2 for n to make the function to calculate the square when this argument is omitted. Write a main that gets the value of m and n from the user to test the function.

10. Create two classes DM and DB which store the value of distances. DM stores distances in meters and centimeters and DB in feet and inches. Write a program that can read values for the class objects and add one object of DM with another object of DB. Use a friend function to carry out the addition operation. The object stores the results may a DM object or DB object, depending on the units in which the results are required. The display should be in the format of feet and inches or meters and centimeters depending on the object on display.

1Feet = 0.3048Meter 1Meter = 3.28 Feet

1Inch = 2.54 Centimeter 1 Centimeter = 0.3937 Inch

11. Explain Friend function and its characteristics. Define a class matrix with an integer array of 3X3 as a data member. Define a friend function which adds two matrix objects and returns resultant matrix object.

12. Write a complete program to illustrate the use of this pointer.