C++单例模式

#include<iostream>
#include"MyString.h"
#include<string>

using namespace std;

class President{
private:
	President(){};
	President(const President&);
	const President& operator=(const President&);
	string Name;

public:
	static President& GetInstnce(){
		static President OnlyInstance;
		return OnlyInstance;	
	}

	string GetName(){
		return Name;
	}

	void SetName(string InputName){
		Name = InputName;
	}
};

int main(){
	//单例模式
	President& OnlyPresident = President::GetInstnce();
	OnlyPresident.SetName("Abraham Lincoln");
	cout<<"The name of the President is: ";
	cout<<President::GetInstnce().GetName()<<endl;
	return 0;
};