inherited single

#include <bits/stdc++.h>
using namespace std;

template <typename T>
class Singleton
{
protected:
    static T* instance;
    Singleton() {}
    Singleton(const Singleton&);
    Singleton& operator=(const Singleton&);

public:
    static T* getInstance()
    {
        if (!instance)
            instance = new T();
        return instance;
    }
};

template <typename T>
T* Singleton<T>::instance = nullptr;

class MyClass : public Singleton<MyClass>
{
public:
    MyClass(){}
    string name;
};


int main() {

    MyClass *mc = nullptr;
    mc = MyClass::getInstance();
    mc->name = "andrew";
    MyClass *oc = mc;
    cout << oc->name << endl;
    return 0;
}