將一個復雜對象的構建與它的表示分離，使得同樣的構建過程可以創建不同的表示。

#pragma once #include "stdafx.h" #include<list> #include<string> #include<iostream> #include<windows.h> using namespace std;//設計模式-建造者模式 Builder//Product類-產品類,由多個部件組成。 class Product { private:list<string>mParts; public:Product() {mParts.clear();}VOID Add(string strPart) {mParts.push_back(strPart);}VOID Show() {cout << "產品創建" << endl;for each(string index in mParts) {cout << index << endl;}} };//Builder類-抽象建造者 class Builder { public:virtual VOID BuildPartA() = 0;virtual VOID BuildPartB() = 0;virtual Product* GetProduct() = 0; };//建造者1 class ConcreteBuilder1 :public Builder { private:Product * mpProduct = NULL; public:ConcreteBuilder1() {mpProduct = new Product();}~ConcreteBuilder1() {delete mpProduct;}VOID BuildPartA() {mpProduct->Add("部件A");}VOID BuildPartB() {mpProduct->Add("部件B");}Product* GetProduct() {return mpProduct;} };//建造者2 class ConcreteBuilder2 :public Builder { private:Product * mpProduct = NULL; public:ConcreteBuilder2() { mpProduct = new Product(); }~ConcreteBuilder2() { delete mpProduct; }VOID BuildPartA() {mpProduct->Add("部件X");}VOID BuildPartB() {mpProduct->Add("部件Y");}Product* GetProduct() {return mpProduct;} };//Director-指揮者類 class Director { public:VOID Construct(Builder *pConcreteBuilder) {pConcreteBuilder->BuildPartA();pConcreteBuilder->BuildPartB();} };int main() {Director *mDirector = new Director();ConcreteBuilder1 * pBuilder1 = new ConcreteBuilder1();ConcreteBuilder2 * pBuilder2 = new ConcreteBuilder2();mDirector->Construct(pBuilder1);mDirector->Construct(pBuilder2);Product *pProduct1 = pBuilder1->GetProduct();Product *pProduct2 = pBuilder2->GetProduct();pProduct1->Show();pProduct2->Show();delete mDirector;delete pBuilder1, delete pBuilder2;//delete pProduct1, delete pProduct2;getchar();return 0; }

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