light.cpp

这是一个模拟电梯的程序

#include<iostream>

using std::cout;
using std::endl;

#include "light.h"

Light::Light(int number)
   :on(false),floorNumber(number)
{
	cout<<"floor"<<floorNumber<<"light constructed"
		<<endl;
}

Light::~Light()
{
	cout<<"floor"<<floorNumber
		<<"light destructed"<<endl;

}

void Light::turnOn()
{
	if(!on){
		on=true;
		cout<<"floor"<<floorNumber
			<<"light turns on"<<endl;

	}

}

void Light::turnOff()
{
	if(on){
		on=false;
		cout<<"floor"<<floorNumber
			<<"light turns off"<<endl;
	}
}