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第十二周C++实验报告(三)

2012-05-09 23:44 260 查看
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#include<iostream>

#include<conio.h>

#include<windows.h>

#include<iomanip>

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

int get_maxSpeed(){return maxSpeed;}

int get_currentSpeed(){return currentSpeed;}

int get_weight(){return weight;}

int get_status(){return status;}

};

vehicle::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

{

maxSpeed=maxS;

currentSpeed=0;

weight=w;

status=rest;

}

void vehicle::start() //由rest状态到running, 初速为1

{

currentSpeed=1;

status= running;

}

void vehicle::stop() //由running状态到rest, 当前速度小于5时,才允许停车

{

if(currentSpeed<5)

status=rest;

else

cout<<"当前速度大于5时,不允许停车!";

}

void vehicle::speed_up() //加速,调用1次,速度加1

{

if(currentSpeed<maxSpeed)

currentSpeed+=1;

else

cout<<"当前车速已是最大值,不允许加速!";

}

void vehicle::slow_down() //减速,调用1次,速度减1,速度为0时,停车

{

if(currentSpeed!=0)

currentSpeed-=1;

else

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, double h=0.7); //定义构造函数

double get_height(){return height;}

};

bicycle::bicycle(int maxS, int w, double h):vehicle(maxS,w) //定义构造函数

{

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); //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……

int get_seatNum(){return seatNum;}

int get_passengerNum(){return passengerNum;}

};

motorcar::motorcar(int maxS, int w, int s, int p):vehicle(maxS,w) //定义构造函数

{

seatNum=s;

passengerNum=p;

}

void motorcar::addPassenger(int p) //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……

{

if((p+passengerNum)>seatNum)

cout<<"即将超员,请您配合,不要上车,等下一班车...";

passengerNum+=p;

}

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, 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){} //定义构造函数

void motorcycle::show() //显示摩托车的运行状态

{

cout<<"状态:"<<((status== rest)?"泊车":"行进")<<" "<<"车速:"<<currentSpeed<<'/'<<maxSpeed<<" "<<"当前成员"<<passengerNum<<'/'<<seatNum;

}

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(); 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;

}
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