static의 진실

class GameMode
{
public:
	static GameMode& getInstance()
	{
		static GameMode gm;
		return gm;
	}
	static GameMode* getDynamicInstance()
	{
		static GameMode *gm = new GameMode();
		return gm;
	}
	void intro()
	{
		std::cout << "fire\n";
	}
	GameMode();
	~GameMode();
};