摘要： 1 class A 2 { 3 public: 4 A(int num); 5 virtual ~A(); 6 int action(int info); 7 int goaction(); 8 virtual int getlastValue(); 9 protected:10 int generateValue();11 private:12 int value;13 int flag;14 int lastValue;15 };16 class B:public A17 {18 ... 阅读全文