小编Jim*_*ani的帖子

class A{
    public: virtual void getName() = 0;
};

class B: public A{
    public:
        B(int a){
            cout<< "B Name : " << a <<endl;
        }
        void getName() override { cout << "Class B" << endl; }
};

class C: public B{
    public:
      C(int a){
            cout<< "C Name : " << a <<endl;
        }
        void getName() override { cout << "Class C" << endl; }
};

int main()
{
    B *b = new B(10);
    b->getName();

    C *c = new C(20);
    c->getName(); …