41 C Program to Swap the Contents of two Numbers using Bitwise XOR Operation
Posted by Superadmin on December 23 2015 03:24:15

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This C Program swaps the contents of two numbers using bitwise XOR operation.
Here is source code of the C program to swap the contents of two numbers using bitwise XOR operation. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

/*
* C program to swap the contents of two numbers using bitwise XOR
* operation. Don't use either the temporary variable or arithmetic
* operators
*/
#include <stdio.h>

void main()
{
long i, k;

printf("Enter two integers \n");
scanf("%ld %ld", &i, &k);
printf("\n Before swapping i= %ld and k = %ld", i, k);
i = i ^ k;
k = i ^ k;
i = i ^ k;
printf("\n After swapping i= %ld and k = %ld", i, k);
}

$ cc pgm48.c
$ a.out
Enter two integers
45
89

Before swapping i= 45 and k = 89
After swapping i= 89 and k = 45