摩托车继承自行车和机动车

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问题及描述；
/*  *Copyright (c) 2016,烟台大学计算机学院  *All rights reserved.  *文件名称；test.cpp  *作者；邱凯  *完成日期；2016年5月11号  *版本号；v6.0  *问题描述;   摩托车继承自行车和机动车 *输入描述；  输入数据  *输出描述； 输出答案 */  #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();};Vehicle::Vehicle(int maxS, int w):maxSpeed(maxS), currentSpeed(0),weight(w), status(rest) {}void Vehicle::start(){    if (status==rest)    {        status=running;        currentSpeed=1;    }   else        cout<<"车辆在行驶！"<<endl;}void Vehicle::stop(){    if (status==running)       if(currentSpeed<5)        {             status=rest;            currentSpeed=0;        }        else            cout<<"车速过快"<<endl;    else        cout<<"车辆未启动！"<<endl;}void Vehicle::speed_up(){    if (status==running)        if(currentSpeed<maxSpeed)            ++currentSpeed;                    else            cout<<"不要超速行驶……"<<endl;    else        cout<<"车辆未启动！"<<endl;}void Vehicle::slow_down(){    if (status==running)    {        if(currentSpeed>0)            --currentSpeed;    }    else        cout<<"车辆未启动！"<<endl;    if(currentSpeed==0)        status=rest;}class Bicycle :virtual public Vehicle{protected:    double height;public:    Bicycle(int maxS=10, int w=50, int h=0.7);};Bicycle::Bicycle(int maxS, int w, int h):Vehicle(maxS, w),height(h) {}class Motorcar : virtual public Vehicle{protected:   int seatNum;    int passengerNum;public:    Motorcar(int maxS=150, int w=1500, int s=5, int p=1);    void addPassenger(int p=1);};Motorcar::Motorcar(int maxS, int w, int s, int p): Vehicle(maxS, w),seatNum(s),passengerNum(p) {}void Motorcar::addPassenger(int p){    if (status==running)    {        cout<<"车行驶"<<endl;    }    else    {        passengerNum+=p;        if(passengerNum>seatNum)       {           passengerNum=seatNum;            cout<<"超员"<<endl;        }        else if (passengerNum<1)        {            passengerNum=1;            cout<<"司机不要离开岗位"<<endl;        }    }}class Motorcycle: public Bicycle, public Motorcar{public:  Motorcycle(int maxS=90, int w=100, int s=3, int p=1, int h=0.7);   void show();};Motorcycle::Motorcycle(int maxS, int w, int s, int p, int h):Vehicle(maxS, w),Bicycle(maxS, w, h),Motorcar(maxS, w, s, p) {}void Motorcycle::show(){    if(status==rest)        cout<<"泊车；\t";    else        cout<<"行进；\t";    cout<<"车速："<<currentSpeed<< maxSpeed <<"\t当前乘员："<<passengerNum<<" / "<< seatNum << 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,应包含头文件<conio.h>        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;}
运行结果；
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