no_singletons.cpp

class Profiler
{
	Profiler::Profiler(Logger& logger, Debugger& debugger) 
		: m_logger(logger)
		, m_debugger(debugger)
public :
	void Update()
	{
		m_debugger.Update();	
		logger.Log("Profiler updating")
	}

private:
	Logger& m_logger;
	Debugger& m_debugger;
};

class Debugger
{
public: 	
	Debugger::Debugger(Logger& logger)

	void Update()
	{
		m_logger.Log("Debugger updating")
	}
private:
	Logger& m_logger;
};

class Logger
{
public:
	void Log(...) 
	{
		printf();
	}
};

class Game()
{

public:
	Game::Game() 
		: m_logger()
		, m_debugger(m_logger)
		, m_profiler(m_debugger, m_logger)
	{

	}

	void Update()
	{
		m_profiler.Update();
	}
	
private:
	Logger m_logger;
	Debugger m_debugger;
	Profiler m_profiler	
};