gistfile1.txt

#include <stdio.h>
#include <stdlib.h>
 
 
int main(void)
{
	int a = 1, b = 2;
	
	printf("a = %d, b= %d\r\n", a, b);
	
	a = a ^ b;
	b = b ^ a;
	a = a ^ b;
	
	printf("a = %d, b= %d\r\n", a, b);
	
	return 0;
}