singletons.cpp

class Profiler
{
	Profiler& GetInstance() { return s_instance; }
public :
	void Update()
	{
		Debugger::GetInstance().Update();	
		Logger::GetInstance().Log("Profiler updating")
	}
};

class Debugger
{
public: 	
	Debugger& GetInstance() { return s_instance; }

	void Update()
	{
		Logger::GetInstance().Log("Debugger updating")
	}
};

class Logger
{
public:
	Logger& GetInstance() { return s_instance; }

	void Log(...) 
	{
		printf();
	}
};

class Game()
{

public:
	void Update()
	{
		Profiler::GetInstance().Update();
	}
};