练习75

xiaoxiao2021-02-28  106

#include <iostream> using namespace std; class Vehicle { public: int MaxSpeed; int Weight; void Run() {cout << "vehicle run!" << endl;} void Stop() {cout << "vehicle stop!" << endl;} // virtual void Run() {cout << "vehicle run!" << endl;} // virtual void Stop() {cout << "vehicle stop!" << endl;} }; class Bicycle : virtual public Vehicle { public: int Height; void Run() {cout << "bicycle run!" << endl;} void Stop() {cout << "bicycle stop!" << endl;} }; class Motorcar : virtual public Vehicle { public: int SeatNum; void Run() {cout << "motocar run!" << endl;} void Stop() {cout << "motocar stop!" << endl;} }; class Motorcycle : public Bicycle, public Motorcar { public: void Run() {cout << "motocycle run!" << endl;} void Stop() {cout << "motocycle stop!" << endl;} }; int main() { Vehicle v; v.Run(); v.Stop(); Bicycle b; b.Run(); b.Stop(); Motorcar m; m.Run(); m.Stop(); Motorcycle mc; mc.Run(); mc.Stop(); Vehicle* vp = &v; vp->Run(); vp->Stop(); vp = &b; vp->Run(); vp->Stop(); vp = &m; vp->Run(); vp->Stop(); vp = &mc; vp->Run(); vp->Stop(); return 0; }
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