设计模式1：简单工厂模式【创建型】

#include <iostream>using namespace std;enum CoreType{CORE_A,CORE_B};struct ISingleCore{public:virtual ~ISingleCore() { }virtual void Produce() = 0;};class CSingleCoreA : public ISingleCore{public:virtual ~CSingleCoreA() { }virtual void Produce() { cout<<"Single Core A"<<endl; }};class CSingleCoreB : public ISingleCore{public:virtual ~CSingleCoreB() { }virtual void Produce() { cout<<"Single Core B"<<endl; }};class CFactory{public:ISingleCore* CreateSingleCore(CoreType type){if(CORE_A == type)return new CSingleCoreA();else if(CORE_B == type)return new CSingleCoreB();}};void main(){CFactory factory;ISingleCore *pSingleCoreA = factory.CreateSingleCore(CORE_A);pSingleCoreA->Produce();delete pSingleCoreA;ISingleCore *pSingleCoreB = factory.CreateSingleCore(CORE_B);pSingleCoreB->Produce();delete pSingleCoreB;}