Program to Swap the numbers without using third variable

#include <stdio.h>
#include<conio.h>
void main()
{
        int a,b;
        clrscr();
           printf("Enter the two numbers to swap them\n");
           scanf("%d%d",&a,&b);
       a = a + b;

       b = a - b;

       a = a - b;

  

   printf("\nAfter swapping value of a : %d", a);

   printf("\nAfter swapping value of b : %d", b);

    getch();

}


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