C Puzzle - 04

 Swap two numbers using a logical operator

It is possible to swap two numbers without using a temporary variable and it is possible XOR operator.

The truth table of the XOR operator

Program

#include <stdio.h>

int main()

{

    int a,b;

    printf("Enter two numbers\n");

    scanf("%d%d",&a,&b);

    printf("Before Sawp: a=%d.... b=%d",a,b);

    a=a^b;

    b=a^b;

    a=a^b;

    printf("\nAfter Swap: a=%d.... b=%d",a,b);

    return 0;

}

OUTPUT