C++之我是二代我继承——摩托车=自行车+机动车

#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(); //减速，调用1次，速度减1，速度为0时，停车
};

vehicle:: vehicle(int maxS, int w):status(rest)//构造函数，初始时，当前速度总为0且处在停车状态
{
maxSpeed=maxS;
weight=w;
currentSpeed=0;
}
void vehicle::start()  //由rest状态到running, 初速为1
{
if (status==rest)
{
status=running;
currentSpeed=1;
}
else
cout<<"车辆已在行驶！"<<endl;
}
void vehicle::stop()//由running状态到rest, 当前速度小于5时，才允许停车
{
if (status==running)
{
if (currentSpeed>=5)
cout<<"车速太快！先减速再停车！"<<endl;
else
{
status=rest;
currentSpeed=0;
}
}
else
cout<<"车辆已经停稳！"<<endl;
}

void vehicle::speed_up()  //加速，调用1次，速度加1
{
if (status==running)
{
if (currentSpeed<=maxSpeed)
++currentSpeed;
else
cout<<"车速已达最大，请不要超速行驶！"<<endl;
}
else
cout<<"请先启动车辆再加速！"<<endl;
}
void vehicle::slow_down() //减速，调用1次，速度减1，速度为0时，停车
{
if (status==running)
{
--currentSpeed;
if (currentSpeed==0)
status=rest;
}
else
cout<<"请先启动车辆再减速！"<<endl;
}

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<<"车辆行驶中，停稳后再上下车！"<<endl;
else
{
passengerNum+=p;
if (passengerNum>seatNum)
{
cout<<"涉嫌超员，清理后达到满员！"<<endl;
passengerNum=seatNum;
}
}
}

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) {};
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<<"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;
}