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This video tutorial explains how you can swap two numbers without using third or temporary variable in any programming language.
Here in this tutorial i have explained this program using c programming language and logic is the same for any other programming language.



Source code for this video tutorial

#include <stdio.h>
#include <stdlib.h>

int main()
{
   int a ,b;
   printf("Enter the two values to swap\n");
   scanf("%d%d",&a,&b);
   printf("before swapping a = %d and b = %d\n",a,b);

   a = a+b;
   b = a-b;
   a = a-b;

    printf("after swapping a = %d and b = %d",a,b);
    return 0;
}