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#include <iostream>

using namespace std;

// Product

class Product {

public:

Product() {

cout << "Product..." << endl;

}

};

// Builder

class Builder {

public:

virtual void BuildPartA() = 0;

virtual void BuildPartB() = 0;

virtual void BuildPartC() = 0;

virtual Product* GetProduct() = 0;

virtual ~Builder() { }

};

class ConcreteBuilder :public Builder {

public:

void BuildPartA() {

cout << "BuildPartA..." << endl;

}

void BuildPartB() {

cout << "BuildPartB..." << endl;

}

void BuildPartC() {

cout << "BuildPartC..." << endl;

}

Product* GetProduct() {

return new Product();

}

};

// Director

class Director {

public:

Director(Builder* pBuilder) {

_builer = pBuilder;

}

void Construct() {

_builer->BuildPartA();

_builer->BuildPartB();

_builer->BuildPartC();

}

private:

Builder *_builer;

};

int main() {

auto builder = new ConcreteBuilder();

auto director = new Director(builder);

director->Construct();

Product* product = builder->GetProduct();

delete product;

delete builder;

delete director;

return 0;

}