Answer Posted / tamal datta

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b;
printf("\n Enter a = ");
scanf("%d",&a);
printf("\n Enter b = ");
scanf ("%d",&b);
printf ("\nBefore swapping a = %d",a);
printf ("\nBefore swapping b = %d",b);
//swaping of 2 numbers without using temp variable
a=a+b;
b=a-b;
a=a-b;
printf("\nAfter swapping a = %d",a);
printf ("\nAfter swapping b= %d",b);
getch();
}

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