#include <iostream>

int main()
{
	int a = 1;
	int b = 2;
	int& c = a;
	std::cout << "a=" << a  << ", b=" << b << ", c=" << c << std::endl;
	c = b;
	std::cout << "a=" << a  << ", b=" << b << ", c=" << c << std::endl;
	
	return 0;
}