#include <iostream>

class Test
{
private:
	int _a;
	int& _b = _a;

public:
	Test()
	{
		_a = 5;
		std::cout << "Normal constructor" << std::endl;
	}

	void printValue()
	{
		_b = 12;
		std::cout << _a << "---" << _b << std::endl;
	}

	void printAddress()
	{
		std::cout << &_a << "---" << &_b << std::endl;
	}
};

int main()
{
	Test t;
	t.printValue();
	t.printAddress();

	return 0;
}