#include <iostream>
using namespace std;

void Swap(int& a, int& b);

int main() {
	int a = 5;
	int b = 10;
	
	Swap(a, b);
	
	cout << "a = " << a << " b = " << b;
	
	return 0;
}

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