HELP!!!!!!!!!!!!!!!!C++? NEW HAND!!!!!!!!

class parent {
public:
parent();
parent(int num);
void parentMethod1();
virtual void parentMethod2();
~parent();
private:
int x;
};

class child : public parent {
public:
child();
~child();
void parentMethod2();
private:
(...etc...)
};

C++係Object-oriented language, 用sub-class inherit parent既function可以响parent method加virtual. 好似parentMethod2咁. 詳細請看definition of polymorphism.