实时控制软件第二次作业--停车场门禁控制系统状态机

作者：李君威U201310747

    状态机图示：

将起落杆的位置状态和通行灯信号作为两个类对象，汽车出入闸传感器信号作为输入，编写代码：

// qichemenjin.cpp 
//Copy right by Justin.

#include "stdafx.h"
#include <iostream>
using namespace std;
class Liftlever
{
public:
    bool Leverstate;  //起落杆位置
    void Changeleverstate()
    {
        Leverstate = !Leverstate;
    };
};

class Light
{
public:
    bool Lightstate;  //通行灯信号
    void Changelightstate()
    {
        Lightstate = !Lightstate;
    };
};

void showleverstate(bool state) 
{
    if(state==true)
        cout << "起落杆升起" << endl;
    else
        cout << "起落杆落下" << endl;
};

void showlightstate(bool state)
{
    if (state == true)
        cout << "绿灯亮" << endl;
    else
        cout << "红灯亮" << endl;
};

Liftlever Liftleverdemo;
Light Lightdemo;

bool Controlsystem(char car)
{
    switch (car)
    {
    case 'y':
        Liftleverdemo.Changeleverstate();
        break;
    case 'n':
        break;
    };

    showleverstate(Liftleverdemo.Leverstate);
    
    switch (Liftleverdemo.Leverstate)
    {
    case true:
        Lightdemo.Lightstate = true;
        cout << "绿灯亮" << endl;
        break;
    case false:
        Lightdemo.Lightstate = false;
        cout << "红灯亮" << endl<<endl;
        break;
    };
    return Lightdemo.Lightstate;
};


int main()
{
    char carin;
    char carout;
    while (1)
    {
        cout << "是否有车辆进入？（y/n）" << endl;
        cin >> carin;
        bool nextstep = Controlsystem(carin);
        while (nextstep)
        {
            cout << "车辆是否已经驶出？（y/n）" << endl;
            cin >> carout;
            nextstep = Controlsystem(carout);
        };
    };
    return 0;
}

运行结果：