C++ Singelton

Here is an example of a singelton class. Note the private constructor.


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class Singleton{
public:
	int myInt;
	static Singleton* getInstance();
protected:
	Singleton();
private:	
	static Singleton* instance;
};

Singleton::Singleton(){}

Singleton* Singleton::instance = 0;

Singleton* Singleton::getInstance(){
	if(instance ==0)
		instance = new Singleton();
	return instance;
}
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Here is a wrapper class that demonstrats that all instances of 
the singelton class are really shared instances of one.
(when all is one and one is all, --wow man thats deep)
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int main(){
	std::cout<<"main:START\n";
	Singleton* one = Singleton::getInstance();
	Singleton* two = Singleton::getInstance();
	Singleton* three = Singleton::getInstance();

	one->myInt = 999;

	std::cout<<"one: " << one->myInt << std::endl;
	std::cout<<"two: " << two->myInt << std::endl;
	std::cout<<"three: " <myInt << std::endl;

	std::cout<<"main:END\n";
	return 0;
}

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here is the tar with these two files in it.
C++_Singelton