不能被继承的类

#include<iostream>
using namespace std;
class MyFinal{
public:
        static MyFinal* getInstance(){
                cout<<"get the instance"<<endl;
                return new MyFinal;
        }
        static void deleteInstance(MyFinal * myfinal){
                cout<<"delete the instance"<<endl;
                delete myfinal;
        }
private:
        MyFinal(){}
        ~MyFinal(){}
};
int main(void){
        MyFinal *myfinal=MyFinal::getInstance();
        MyFinal::deleteInstance(myfinal);
        return 0;
}