摩托车继承自行车和机动车

////  main.cpp//  project////  Created by 徐伟 on 6/15/16.//  Copyright © 2016 fizz_i. All rights reserved.//#include <iostream>#include<conio.h>#include <windows.h>using namespace std;enum vehicleStaus {rest, running};  //车辆状态：泊车、行进class vehicle //车辆类{protected:    int maxSpeed;  //最大车速    int currentSpeed; //当前速度    int weight;   //车重    vehicleStaus status; //rest-泊车状态；running-行进状态public:    vehicle(int maxS, int w); //构造函数，初始时，当前速度总为0且处在停车状态    void start();  //由rest状态到running, 初速为1    void stop(); //由running状态到rest, 当前速度小于5时，才允许停车    void speed_up();  //加速，调用1次，速度加1    void slow_down(); //减速，调用1次，速度减1，速度为0时，停车};vehicle::vehicle(int maxS, int w):maxSpeed(maxS),currentSpeed(0),weight(w),status(rest){}//构造函数，初始时，当前速度总为0且处在停车状态void vehicle ::start() //由rest状态到running, 初速为1{    if(status==rest)    {        status=running;        currentSpeed=1;    }    else        cout<<"车辆已在行驶。"<<endl;}void vehicle ::stop()//由running状态到rest, 当前速度小于5时，才允许停车{    if(status==running)    {        if(currentSpeed<5)        {            status=rest;            cout<<"允许停车。"<<endl;        }        else            cout<<"车辆的行驶速度不允许停车。"<<endl;    }    else        cout<<"车辆尚未启动。"<<endl;}void vehicle ::speed_up() //加速，调用1次，速度加1{    if(status==running)    {        if(currentSpeed<maxSpeed)        {            currentSpeed+=1;            cout<<"加速后的车速为："<<currentSpeed<<endl;        }        else            cout<<"注意限速行驶。"<<endl;    }    else        cout<<"车辆尚未启动。"<<endl;}void vehicle ::slow_down()//减速，调用1次，速度减1，速度为0时，停车{    if(status==running)    {        if(currentSpeed>1)        {            currentSpeed-=1;            cout<<"减速后的车速为："<<currentSpeed<<endl;        }        else        {            status=rest;            currentSpeed=0;            cout<<"车辆已经停下。"<<endl;        }    }    else        cout<<"车辆尚未启动。"<<endl;}class bicycle :virtual public vehicle//（1）自行车类的虚基类为车辆类{protected:    double height; //车高public:    bicycle(int maxS=10, int w=50, double h=0.7);   //定义构造函数};bicycle::bicycle(int maxS, int w, double h):vehicle(maxS,w),height(h){}class motorcar :virtual public vehicle//（2）机动车类的虚基类也为车辆类{protected:    int seatNum; //座位数    int passengerNum; //乘客人数public:    motorcar(int maxS=150, int w=1500, int s=5, int p=1);   //定义构造函数    void addPassenger(int p=1);   //增加搭载的乘客，超员要拒载，有人下车时，p为负数。当然车上乘客至少有1个（司机）。只有车停稳后才能上下客。};motorcar::motorcar(int maxS, int w, int s, int p):vehicle(maxS,w),seatNum(s),passengerNum(p){}void motorcar::addPassenger(int p)  //增加搭载的乘客，超员要拒载，有人下车时，p为负数。当然车上乘客至少有1个（司机）。只有车停稳后才能上下客。{    if(status==running)    {        cout<<"请不要上下车。"<<endl;    }    else    {        if(passengerNum>seatNum)        {            cout<<"乘客已满，超员拒载！"<<endl;            passengerNum=seatNum;        }        else        {            passengerNum=passengerNum+p;            if(passengerNum<1)                cout<<"请司机不要离开座位。"<<endl;            else                cout<<"现搭载的乘客人数："<<passengerNum<<endl;        }    }        }class motorcycle: public bicycle,public motorcar //（3）摩托车类的基类为自行车类和机动车类{public:    motorcycle(int maxS=90, int w=100, int s=3, int p=1, double h=0.7);//定义构造函数    void show(); //显示摩托车的运行状态};motorcycle::motorcycle(int maxS, int w, int s, int p, double h):vehicle(maxS,w),motorcar(s,p),bicycle(h){}void motorcycle::show() //显示摩托车的运行状态{    cout<<"机动车现在的状态是：";    if(status==rest)        cout<<"泊车状态。"<<endl;    if(status==running)        cout<<"行进状态。"<<endl;}int main(){    motorcycle m;    bool end=false;    while (!end)    {        cout<<"请操作：1-启动  2-加速  3-减速  4-有人上车  5-有人下车  6-停车 0-结束"<<endl;        char keydown= _getch(); //_getch()返回键盘上读取的字符        switch(keydown)        {            case '1':                cout<<"选中的操作是1-启动\t";                m.start();                break;            case '2':                cout<<"选中的操作是2-加速\t";                m.speed_up();                break;            case '3':                cout<<"选中的操作是3-减速\t";                m.slow_down();                break;            case '4':                cout<<"选中的操作是4-有人上车\t";                m.addPassenger();                break;            case '5':                cout<<"选中的操作是5-有人下车\t";                m.addPassenger(-1);                break;            case '6':                cout<<"选中的操作是6-停车\t";                m.stop();                break;            case '0':                end=true;                break;        }        m.show();        cout<<endl;        Sleep(200);  //要包含头文件<windows.h>    }    return 0;}