13周项目3

#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1void 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1void 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){} void vehicle::start(){ if (status==rest)      {          status=running;          currentSpeed=1;      }      else          cout<<"车辆已经行驶！"<<endl;  }void vehicle::stop(){if (status==running)          if(currentSpeed<5)          {              status=rest;              currentSpeed=0;          }          else              cout<<"车速太快！先减速再停车……"<<endl;      else          cout<<"车辆未启动！"<<endl;  }void vehicle::speed_up(){if (status==running)          if(currentSpeed<maxSpeed)              ++currentSpeed;          else              cout<<"请不要超速行驶……"<<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//（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, int h=0.7);   //定义构造函数};bicycle::bicycle(int maxS, int w, int 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)  {      if (status==running)      {          cout<<"车辆正在行驶，停车后再上下车！"<<endl;      }      else      {          passengerNum+=p;          if(passengerNum>seatNum)          {              passengerNum=seatNum;              cout<<"涉嫌超员，已清理后达到满员！"<<endl;          }          else if (passengerNum<1)          {              passengerNum=1;              cout<<"请司机不要离开岗位！"<<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://定义构造函数motorcycle(int maxS=90, int w=100, int s=3, int p=1, int h=0.7);   void show(); //显示摩托车的运行状态};motorcycle::motorcycle(int maxS, int w, int s, int p, int h):vehicle(maxS, w),bicycle(maxS, w, h),motorcar(maxS, w, s, p){}  //显示摩托车的运行状态  void motorcycle::show()  {      cout<<"状态：";      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switch(keydown){case '1': cout<<"操作(启动)\t"; m.start(); break;case '2':                         cout<<"操作(加速)\t"; m.speed_up(); break;case '3':                          cout<<"操作(减速)\t"; m.slow_down(); break;case '4':                        cout<<"操作(有人上车)\t"; m.addPassenger(); break;case '5':                      cout<<"操作(有人下车)\t"; m.addPassenger(-1); break;case '6':                      cout<<"操作(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：