雨刷作业——一个类实现

//以下代码是用一个类来实现雨刷问题，仅供参考

#include <iostream.h>
#include <stdlib.h>

class WindshieldWiper{  //雨刷类定义
private:
	int wiperSpeed;					//雨刷速度
	int leverPosition;				//控制杆位置，取值为0、1、2、3
	int dialPosition;				//刻度盘位置，取值为1、2、3
	void setWiperSpeed();			//设置雨刷速度
	void setLeverPosition(int);		//设置控制杆位置
	void setDialPosition(int);		//设置刻度盘位置
public:
	WindshieldWiper(int w,int l,int d);
	int getWiperSpeed();			//获取雨刷速度
	int getLeverPostion();			//获取控制杆位置
	int getDialPosition();			//获取刻度盘位置
	void senseLeverUp();			//感知控制杆升档
	void senseLeverDown();			//感知控制杆降档
	void senseDialUp();				//感知刻度盘升档
	void senseDialDown();			//感知刻度盘降档
};

WindshieldWiper::WindshieldWiper(int w = 0,int l = 0,int d = 1)  //构造函数
{
	wiperSpeed = w;
	leverPosition = l;
	dialPosition = d;
}

int WindshieldWiper::getDialPosition()
{
	return dialPosition;
}

int WindshieldWiper::getLeverPostion()
{
	return leverPosition;
}

int WindshieldWiper::getWiperSpeed()
{
	return wiperSpeed;
}

void WindshieldWiper::setDialPosition(int d)
{
	dialPosition = d;
}

void WindshieldWiper::setLeverPosition(int l)
{
	leverPosition = l;
}

void WindshieldWiper::setWiperSpeed()
{
	if(leverPosition == 0)				//控制杆为0档
		wiperSpeed = 0;
	else
		if(leverPosition == 1)			//控制杆为1档
		{
			if(dialPosition == 1)		//刻度盘为1档
				wiperSpeed = 4;
			else
				if(dialPosition == 2)	//刻度盘为2档
					wiperSpeed = 6;
				else
					wiperSpeed = 12;	//刻度盘为3档
		}
		else
			if(leverPosition == 2)		//控制杆为2档
				wiperSpeed = 30;
			else						//控制杆为3档
				wiperSpeed = 60;
	cout<<"Lever position is: "<<leverPosition<<endl;
	cout<<"Dial position is: "<<dialPosition<<endl;
	cout<<"Wiper speed is: "<<wiperSpeed<<endl;
}

void WindshieldWiper::senseDialDown()
{
	switch(dialPosition)
	{
	case 1: break;
	case 2: setDialPosition(1);break;
	case 3: setDialPosition(2);break;
	}
	setWiperSpeed();
}

void WindshieldWiper::senseDialUp()
{
	switch(dialPosition)
	{
	case 1: setDialPosition(2);break;
	case 2: setDialPosition(3);break;
	case 3: break;
	}
	setWiperSpeed();
}

void WindshieldWiper::senseLeverDown()
{
	switch(leverPosition)
	{
	case 0: break;
	case 1: setLeverPosition(0);break;
	case 2: setLeverPosition(1);break;
	case 3: setLeverPosition(2);break;
	}
	setWiperSpeed();
}

void WindshieldWiper::senseLeverUp()
{
	switch(leverPosition)
	{
	case 0: setLeverPosition(1);break;
	case 1: setLeverPosition(2);break;
	case 2: setLeverPosition(3);break;
	case 3: break;
	}
	setWiperSpeed();
}

void menu(WindshieldWiper &w)  //菜单函数
{
	int flag;
	cout<<"Lever position is: "<<w.getLeverPostion()<<endl;
	cout<<"Dial position is: "<<w.getDialPosition()<<endl;
	cout<<"Wiper speed is: "<<w.getWiperSpeed()<<endl;
	while(1)
	{
		cout<<"==================Please choose operation============"<<endl;
		cout<<"\t==========1:Lever Up==========="<<endl;
		cout<<"\t==========2:Lever Down========="<<endl;
		cout<<"\t==========3:Dial Up============"<<endl;
		cout<<"\t==========4:Dial Down=========="<<endl;
		cout<<"\t==========0:Quit==============="<<endl;
		cout<<"====================================================="<<endl;
		cout<<"Input the number(0~4):";
		cin>>flag;
		switch(flag)
		{
		case 1:w.senseLeverUp();break;
		case 2:w.senseLeverDown();break;
		case 3:w.senseDialUp();break;
		case 4:w.senseDialDown();break;
		case 0:exit(0);
		}
	}
}

//主函数
void main()
{
	WindshieldWiper w(0,0,1);
	menu(w);
}

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