外观模式:为一组具有类似功能的类群，比如类库，子系统等等，提供一个一致的简单的界面。

代码如下:

#include <iostream>
using namespace std;class Television
{
public:void on(){cout << "Tv on" << endl;}void off(){cout << "Tv off" << endl;}
};class Light
{
public:void on(){cout << "Light on" << endl;}void off(){cout << "Light off" << endl;}
};class Audio
{
public:void on(){cout << "Audio on" << endl;}void off(){cout << "Audio off" << endl;}
};class Microphone
{
public:void on(){cout << "Microphone on" << endl;}void off(){cout << "Microphone off" << endl;}
};class Dvd
{
public:void on(){cout << "Dvd on" << endl;}void off(){cout << "Dvd off" << endl;}
};class KTVMode
{
public:KTVMode(){pTv = new Television;pLight = new Light;pAudio = new Audio;pMicrophone = new Microphone;pDvd = new Dvd;}void onKtv(){pTv->on();pLight->on();pAudio->on();pMicrophone->on();pDvd->on();}void offKtv(){pTv->off();pLight->off();pAudio->off();pMicrophone->off();pDvd->off();}private:Television *pTv;Light *pLight;Audio *pAudio;Microphone *pMicrophone;Dvd *pDvd;~KTVMode(){delete pTv;delete pLight;delete pAudio;delete pMicrophone;delete pDvd;}
};void test01()
{KTVMode *ktv = new  KTVMode;ktv->onKtv();
}int main()
{test01();return 0;
}

测试结果: