/*****************************************************************/
// File    : swap.c
// Purpose : Swaps the contents of 2 variables without any additional variable
// Author  : Nanda Kishor K N
// Mail Id : knnkishor@yahoo.com, nandakishorkn@rediffmail.com
// Website : www.c4swimmers.esmartguy.com ( WEB MASTER )
// Group   : c4swimmers@yahoogroups.com   ( GROUP OWNER )
/*****************************************************************/

#include<stdio.h>

/*
   Name      :   main()
   Purpose   :   This is the main function that accepts TWO values and swaps the
                 contents without any additional variable. This does not call any other function.
   Parameter :   None
*/
int main()
{
   // Variable Declarations & Initialization
   // Naming conventions are used like all integer variables should begin with 'i'
   int iA,iB;

   // Accept TWO values from the user
   printf("Enter 2 values : ");
   scanf("%d %d",&iA,&iB);
   printf("\nBefore Swapping :\nFirst Value=%d  Second Value=%d",iA,iB);

   // Swap the contents
   iA = iA + iB;
   iB = iA - iB;
   iA = iA - iB;

   // Display the result or contents of the variables after swapping
   printf("\nAfter Swapping :\nFirst Value=%d  Second Value=%d",iA,iB);

   return 0;
}  // End of main() program