currentconditionsdisplay.cpp

Head First 设计模式原书用的是JAVA写的代码

#include "StdAfx.h"
#include ".\currentconditionsdisplay.h"

CCurrentConditionsDisplay::CCurrentConditionsDisplay(CSubject& weather)
{
	weatherData=&weather;
	weatherData->registerObserver(this);
	
}

CCurrentConditionsDisplay::~CCurrentConditionsDisplay(void)
{
	weatherData->removeObserver(this);
}
void CCurrentConditionsDisplay::update(float tem, float hum, float pre)
{
	temperature=tem;
	humidity=hum;
	pressure=pre;
	display();
}
void CCurrentConditionsDisplay::display()
{
	cout<<"Current Conditions:"<<temperature<<"F degrees and "<<humidity<<"%humidity\n"; 
}