#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;
currentSpeed=0,status=rest;
} //构造函数，初始时，当前速度总为0且处在停车状态
void start()
{
if(status==running)
{
cout<<"车已经行驶"<<endl;
return;
}
currentSpeed=1,status=running;
} //由rest状态到running, 初速为1
void stop()
{
if(currentSpeed>=5)
{
cout<<"车辆速度太快，请减速"<<endl;
return;
}
currentSpeed=0,status=rest;
} //由running状态到rest, 当前速度小于5时，才允许停车
void speed_up()
{
if(currentSpeed>=maxSpeed)
{
cout<<"请不要超速行驶"<<endl;
return;
}
if(status==rest)
{
cout<<"车辆未行始"<<endl;
return;
}
currentSpeed++;
} //加速，调用1次，速度加1
void slow_down()
{
if(currentSpeed<=0)
{
cout<<"车辆未启动"<<endl;
return;
}
currentSpeed--;
if(currentSpeed==0)
{
status==rest;
return;
}
} //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); //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 (p > 0)
{
if (status == running)
{
cout << "车辆正在行驶，停车后再上下车！" << endl;
return;
}
if (passengerNum >= seatNum)
{
cout << "涉嫌超员，已清理后达到满员！" << endl;
return;
}
passengerNum++;
}
else
{
if (passengerNum <= 1)
{
cout << "请司机不要离开岗位！" << endl;
return;
}
passengerNum--;
}
}
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()
{
cout << "状态：" << (status == rest? "泊车。":"行进。") <<'\t'<< "车速：" <<currentSpeed<<"/"<<maxSpeed <<'\t'<< "当前成员：" <<passengerNum<<"/"<<seatNum << endl;
} //显示摩托车的运行状态
};
motorcycle::motorcycle(int maxS, int w, int s, int p, int h):bicycle (maxS,w,h),motorcar(maxS,w,s,p),vehicle(maxS,w)
{}
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;
}
运行结果
