#include <stdio.h>

#define swaps(type, a, b) do { type tmp = a; a = b; b = tmp; } while(0)

void swap(int *a, int *b) {
	int tmp = *a;
	*a = *b;
	*b = tmp;
}

int main() {
	int a = 69, b = 31;
	printf("%d, %d", a, b);
	swap(&a, &b);
	printf("Function Swap: %d, %d\n", a, b);
	swaps(int, a, b);
	printf("Macro Swap: %d, %d\n", a, b);
	return 0;
}