第十三周实验报告1

#include <iostream>
using namespace std;

class Vehicle
{
public:
void run() const { cout << "run a vehicle. "<<endl; } //(2) run()为虚函数
};

class Car: public Vehicle
{
public:
void run() const {cout << "run a car. "<<endl; 	}
};

class Airplane: public Vehicle
{
public:
void run() const {cout << "run a airplane. "<<endl;}
};

int main()
{
cout << "(a) 直接用对象访问成员函数: " << endl;

Vehicle v;
v.run();
Car car;
Airplane airplane;
car.run();
airplane.run();

cout << "(b) 用指向基类的指针访问成员函数: " << endl;

Vehicle *vp;
vp = &car;
vp->run();
vp = &airplane;
vp->run();
system("pause");

return 0;
}