[C] Swap의 구현

#include <stdio.h>

#define SWAP(a,b) ((a) ^= (b) ^= (a) ^= (b))

int main(void)

{

int a = 5;

int b = 10;

SWAP(a,b);

printf("a = %d, b = %d\n", a, b);

/* make compiler happy :) */

return 0;

}