#include <stdio.h>

void swap_1(int a, int b){
	int temp;
	temp = a;
	a = b;
	b = temp;
}

int main(){
	int x = 3;
	int y = 4;
	printf("Before swap_1 %d %d\n", x, y);
	swap_1(x,y);
	printf("After swap_1 %d %d\n", x, y);
	return 0;
}