外观模式

//Facade.h
#include "stdafx.h"
#include <iostream>
using namespace std;

class SubSystemOne
{
public :
        void MethodOne()
       {
              cout << "MethodOne!" << endl;
       }
};

class SubSystemTwo
{
public :
        void MethodTwo()
       {
              cout << "MethodTwo!" << endl;
       }
};

class SubSystemThree
{
public :
        void MethodThree()
       {
              cout << "MethodThree!" << endl;
       }
};

class Facade
{
private :
        SubSystemOne * m_pSubSystemOne;
        SubSystemTwo * m_pSubSystemTwo;
        SubSystemThree * m_pSubSystemThree;
public :
       Facade()
       {
              m_pSubSystemOne = new SubSystemOne ();
              m_pSubSystemTwo = new SubSystemTwo ();
              m_pSubSystemThree = new SubSystemThree ();
       }
        void MethodA()
       {
              cout << "方法组A" << endl;
              m_pSubSystemOne->MethodOne();
              m_pSubSystemTwo->MethodTwo();
              m_pSubSystemThree->MethodThree();
       }
        void MethodB()
       {
              cout << "方法组B" << endl;
              m_pSubSystemTwo->MethodTwo();
              m_pSubSystemThree->MethodThree();
       }
};

// FacadePattern.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "Facade.h"

int _tmain (int argc , _TCHAR * argv [])
{
        Facade facade;
       facade.MethodA();
       facade.MethodB();
       getchar();
        return 0;
}