摘要：
class A{ public: A(int y): x(y) {} void print() { cout<<"this is a:"<<get()<<endl; } int get() { return x; } private: int32_t x;};class B: public A{ public: B(int y):A(y){} virtual void print() { cout<<"this is b:"<<get()<<endl; } };int main(){ 阅读全文
