本博參考了這篇博客 http://www.cnblogs.com/wanggary/archive/2011/04/07/2008796.html ~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~ 使用策略的類（CUseStrategy） 抽象策略類（CAbsStrategy）
策略類1（CStrategy1） 策略類2（CStrategy2） 策略類3（CStrategy3） 。。。 這些類之間的關系是： 1、所有的策略類由（使用策略的類UseStrategy）調用。 2、所有的策略類繼承自（抽象策略類AbsStrategy）。 3、抽象策略類的對象，作為使用策略類的對象成員。
//UseStrategy.h 文件//使用策略的類#PRagma once#include "AbsStrategy.h"http://包含抽象策略類的頭文件class CUseStrategy{public: CUseStrategy(IStrategy *pStrategy); ~CUseStrategy(void); void Operate(void);private: CAbsStrategy*m_pStrategy;};//UseStrategy.cpp#include "StdAfx.h"#include "UseStrategy.h"CUseStrategy::CUseStrategy(CAbsStrategy*pStrategy){ this->m_pStrategy = pStrategy;}CUseStrategy::~CUseStrategy(void){ delete this->m_pStrategy;}void CUseStrategy::Operate(void){ this->m_pStrategy->Operate();}//AbsStrategy.h #pragma once//抽象策略類文件Class CAbstrategy{Public: CAbstrategy(); virtual~CAbstrategy(); virtual void operate()=0;//純虛函數。};//Strategy1.h文件//策略1#pragma once#include "Abstrategy.h"class CStrategy1 :public CAbstraegy{public: CStrategy1(); ~CStrategy1(); void operate();};//Strategy1.cpp文件#include "StdAfx.h"#include "Strategy1.h"#include <iostream>using std::cout;using std::endl;Strategy1::Strategy1(void){}Strategy1::~Strategy1(void){}void Strategy1::operate(void){ cout << "這是策略1！" << endl;}//Strategy2.h文件//策略1#pragma once#include "Abstrategy.h"class CStrategy2 :public CAbstraegy{public: CStrategy2(); ~CStrategy2(); void operate();};//Strategy2.cpp文件#include "StdAfx.h"#include "Strategy2.h"#include <iostream>using std::cout;using std::endl;Strategy2::Strategy2(void){}Strategy2::~Strategy2(void){}void Strategy2::operate(void){ cout << "這是策略2！" << endl;}//Strategy3.h文件//策略3#pragma once#include "Abstrategy.h"class CStrategy3 :public CAbstraegy{public: CStrategy3(); ~CStrategy3(); void operate();};//Strategy3.cpp文件#include "StdAfx.h"#include "Strategy3.h"#include <iostream>using std::cout;using std::endl;Strategy3::Strategy3(void){}Strategy3::~Strategy3(void){}void Strategy3::operate(void){ cout << "這是策略3！" << endl;}========================================================== 見證奇跡的時刻 =========================================================
#include"UseStrategy.h"#include "Abstrategy.h"#include "Strategy1.h"#include "Strategy2.h"#include "Strategy3.h"int main(){ CUseStrategy*pUseStrategy; //使用第一個策略 pUseStrategy=new(new CStrategy1()); pUseStrategy->operate(); delete pUseStrategy; //使用第二個策略 pUseStrategy=new(new CStrategy2()); pUseStrategy->operate(); delete pUseStrategy; //使用第三個策略 pUseStrategy=new(new CStrategy3()); pUseStrategy->operate(); delete pUseStrategy;}新聞熱點
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