声明一个车(vehicle)基类,具有MaxSpeed、weight等成员变量有Run、Stop等成员函数

实验九 多态性与虚函数(2)

一、实验目的和要求

1. 2. 3. 4.

了解多态的概念;

了解虚函数的作用及使用方法;

了解静态关联和动态关联的概念和用法; 了解纯虚函数和抽象类的概念和用法

二、实验内容和结果

1. 声明一个车(vehicle)基类,具有MaxSpeed、weight等成员变量有Run、Stop等成员

函数,由此派生出自行车(bicycle)类、汽车(motorcar)类,自行车(bicycle)类有高度(Height)等属性,汽车(motorcar)有座位数(SeatNum)等属性,类从bicycle和motorcar派生出摩托车(motorcycle)类,它们都有Run、Stop等成员函数,使用虚函数完成。(各个类都必须定义构造函数和析构函数)

#include using namespace std; class vehicle {

protected:

float MaxSpeed; float weight; public:

~vehicle(){}

vehicle(float m,float w):MaxSpeed(m),weight(w){} virtual void Run () {

cout<<\车已经启动啦!!!\<

}

virtual void Stop () {

cout<<\已经停啦!!!\<

class bicycle: virtual public vehicle {

protected:

float Height; public:

~bicycle(){}

bicycle(float m,float w,float h):vehicle( m,w),Height(h){} void Run () {

cout<<\is:\<

void Stop () {

cout<<\已经停啦!!!\<

} };

class motorcar: virtual public vehicle {

protected:

int SeatNum; public:

~motorcar(){}

motorcar(float m,float w,float s):vehicle( m,w),SeatNum(s){} void Run () {

cout<<\is:\<

void Stop () {

cout<<\已经停啦!!!\<

class motorcycle: public bicycle, public motorcar

联系客服:779662525#qq.com(#替换为@) 苏ICP备20003344号-4