Builder - 生成器

 结构图：

通俗解释：MM最爱听的就是“我爱你”这句话了，见到不同地方的MM,要能够用她们的方言跟她说这句话哦，我有一个多种语言翻译机，上面每种语言都有一个按键，见到MM我只要按对应的键，它就能够用相应的语言说出“我爱你”这句话了，国外的MM也可以轻松搞掂，这就是我的“我爱你”builder。（这一定比美军在伊拉克用的翻译机好卖） 

建造模式：将一个复杂对象的构建与它的表示分离，使得同样的构建过程可以创建不同的表示。建造模式使得产品内部表象可以独立的变化，客户不必知道产品内部组成的细节。建造模式可以强制实行一种分步骤进行的建造过程。

相关模式：Abstract Factory 与B u i l d e r相似，因为它也可以创建复杂对象。主要的区别是B u i l d e r模式着重于一步步构造一个复杂对象。而Abstract Factory着重于多个系列的产品对象(简单的或是复杂的）。B u i l d e r在最后的一步返回产品，而对于Abstract Factory来说，产品是立即返回的。C o m p o s i t e通常是用B u i l d e r生成的。

可变方面：如何创建一个组合对象。

源码示例：

#include <iostream>using namespace std;class Lunch{public:Lunch(){};~Lunch(){};public:virtual void Createstaplefood(void){};  //主食virtual void CreatMousse(int nNum){};   //甜点virtual void CreatSoup(int nNum){};    //汤virtual int GetResult(void){return 0;};};class ChineseLunch: public Lunch{public:ChineseLunch(){};~ChineseLunch(){};public:virtual void Createstaplefood(void);  virtual void CreatSoup(int nNum);virtual int GetResult(void);};void ChineseLunch::Createstaplefood(){cout<<"Create Rice for ChineseLunch"<<endl;}void ChineseLunch::CreatSoup(int nNum){cout<<"Create "<<nNum<<" tomato Soup for ChineseLunch"<<endl;}int ChineseLunch::GetResult(void){cout<<"ChineseLunch be done"<<endl;return 0;}class UsLunch: public Lunch{public:UsLunch();~UsLunch();public:virtual void Createstaplefood(void);  virtual void CreatMousse(int nNum);   virtual void CreatSoup(int nNum);virtual int GetResult(void);};void UsLunch::Createstaplefood(){cout<<"Create Beaf for UsLunch"<<endl;}void UsLunch::CreatMousse(int nNum){cout<<"Create "<<nNum<<" ice cream  for UsLunch"<<endl;}void UsLunch::CreatSoup(int nNum){cout<<"Create "<<nNum<<" potato Soup for UsLunch"<<endl;}int UsLunch::GetResult(void){cout<<"UsLunch be done"<<endl;return 0;}class FranceLunch: public Lunch{public:FranceLunch();~FranceLunch();public:virtual void Createstaplefood(void);virtual void CreatMousse(int nNum);virtual int GetResult(void);};void FranceLunch::Createstaplefood(void){cout<<"Create Beaf for FranceLunch"<<endl;}void FranceLunch::CreatMousse(int nNum){cout<<"Create "<<nNum<<" ice cream  for FranceLunch"<<endl;}int FranceLunch::GetResult(void){cout<<"FranceLunch be done"<<endl;return 0;}class Cook{public:Cook();~Cook();public:int CreateThreemealsChildrenLunch(Lunch& lunch);int CreateFourmealsChildrenLunch(Lunch& lunch);int CreateAdultFranceLunch(Lunch& lunch);};Cook::Cook(){}Cook::~Cook(){}int Cook::CreateThreemealsChildrenLunch(Lunch& lunch){lunch.CreatMousse(1);lunch.Createstaplefood();lunch.CreatSoup(1);return lunch.GetResult();}int Cook::CreateFourmealsChildrenLunch(Lunch& lunch){lunch.CreatMousse(1);lunch.Createstaplefood();lunch.CreatSoup(1);return lunch.GetResult();}int Cook::CreateAdultFranceLunch(Lunch& lunch){lunch.Createstaplefood();lunch.CreatMousse(4);return lunch.GetResult();}int main(){Cook Join;ChineseLunch chineselunch;Join.CreateThreemealsChildrenLunch(chineselunch);Join.CreateFourmealsChildrenLunch(chineselunch);return 0;}