第十二周实验报告（3）

/** 程序的版权和版本声明部分* Copyright (c) 2011, 烟台大学计算机学院学生 * All rights reserved.* 文件名称：                              * 作    者：   程龙                              * 完成日期：   2012  年  5  月  8  日
* 对任务及求解方法的描述部分* 输入描述： * 问题描述：* 程序输出：*/
#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):maxSpeed(maxS),weight(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};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):vehicle(maxS,w){height = h;}//定义构造函数};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);   //搭载乘客，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）。上下车时要保证安全……};motorcar::motorcar(int maxS, int w, int s, int p): vehicle(maxS, w),seatNum(s),passengerNum(p){}   class motorcycle:public motorcar,public bicycle//（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, int 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, int h):vehicle(maxS, w),bicycle(maxS, w, h),motorcar(maxS, w, s, p){}  void vehicle::start(){status  = running;currentSpeed = 1;}void vehicle::stop(){if(currentSpeed < 5){status = rest;currentSpeed = 0;cout<<"停车"<<endl;}else {cout<<"速度过快禁止停车"<<endl;}}void vehicle::speed_up(){currentSpeed +=1;}void vehicle::slow_down(){if(currentSpeed>0){currentSpeed -=1;}else if(currentSpeed==0){status = rest;}}void motorcar::addPassenger(int p){if(currentSpeed == 0){if(passengerNum<=5){passengerNum +=p;}}elsecout<<"车未停稳禁止上客"<<endl;}void motorcycle::show(){if(status){cout<<"running"<<endl;cout<<"当前速度"<<currentSpeed<<endl;cout<<"当前车上的成员"<<passengerNum<<endl;}else{cout<<"rest"<<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<<"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(1); 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>}system("pause");return 0;}