#include <iostream>
using namespace std;

void swap (int *a, int *b){
	cout << "my swap called\n";    // Note that this is not in the output.
	*a = *b;
}

int main(){
	int x = 1;
	int y = 2;
	swap(x,y);
	cout << "x=" << x << ", y=" << y << "\n";
}