第十三周实验报告 任务一

#include <iostream>
using namespace std;

class Vehicle
{public:
virtual void run() const = 0; //(3) run()为纯虚函数
};

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;Vehicle已被定义成了虚基类
//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;
}