Two Numbers are input through the keyboard into two locations C & D. Write a program to interchange the contents of C & D.

Source Code :

#include<stdio.h>

void main()

{

      int c,d;

      clrscr();

      printf("\nEnter Two Numbers : ");

      scanf("%d%d",&c,&d);

      c=c+d;

      d=c-d;

      c=c-d;

      printf("\nInterchanged Numbers : %d,%d",c,d);

      getch();

}

Output :

Enter Two Numbers : 5 7

Interchanged Numbers : 7,5