C Program to Read Two Integers M and N & Swap their Values

This C Program reads two integers & swap their values.

Here is source code of the C program to read two integers & swap their values. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

1. /*

2.  * C program to read two integers M and N and to swap their values.

3.  * Use a user-defined function for swapping. Output the values of M

4.  * and N before and after swapping.

5.  */

6. #include <stdio.h>

7. void swap(float *ptr1, float  *ptr2);

9. void main()

10. {

11.     float m, n;

13.     printf("Enter the values of M and N \n");

14.     scanf("%f %f", &m, &n);

15.     printf("Before Swapping:M = %5.2ftN = %5.2f\n", m, n);

16.     swap(&m, &n);

17.     printf("After Swapping:M  = %5.2ftN = %5.2f\n", m, n);

18. }

19. /*  Function swap - to interchanges the contents of two items */

20. void swap(float *ptr1, float *ptr2)

21. {

22.     float temp;

24.     temp = *ptr1;

25.     *ptr1 = *ptr2;

26.     *ptr2 = temp;

27. }

$ cc pgm36.c
$ a.out
Enter the values of M and N
2 3
Before Swapping:M =  2.00    N =  3.00
After Swapping:M  =  3.00    N =  2.00