其中在输出的时候，为了使输出更加清晰，我们定义了分隔线SPLIT_LINE和SUB_SPLIT_LINE，这个并不是必要的，你可以选择去掉：

#define     SPLIT_LINE "============================="
#define SUB_SPLIT_LINE "-----------------------------"

创建者接口(抽象创建者)：

class IBuilder
{
public:ProductComputer *m_product;
public:IBuilder(){cout<<"Constructor of Interface Builder"<cout<<"Destructor of Interface Builder"<delete m_product;m_product = nullptr;}}
public:virtual void buildCPU () = 0;virtual void buildRAM () = 0;virtual void buildDISK() = 0;virtual ProductComputer* getProductPtr() = 0;
};

具体创建者：

class ConcreteBuilder: public IBuilder{
public:ConcreteBuilder(){cout<<"Constructor of ConcreteBuilder"<cout<<"Destructor of ConcreteBuilder"<this->m_product->setCPU("Intel Core i7-13700KF");}void buildRAM(){this->m_product->setRAM("Kingston FURY 32GB DDR5");}void buildDISK(){this->m_product->setDISK("WD SSD M.2(NVMe) 500G");}ProductComputer* getProductPtr(){return m_product;}
};

指挥者类：

class Director{
private:IBuilder* m_builder;
public:Director(){cout<<"Constructor of Director"<cout<<"Destructor of Director"<this->m_builder = builder;}ProductComputer* construct(){m_builder->buildCPU();m_builder->buildRAM();m_builder->buildDISK();return m_builder->getProductPtr();}
};

主函数：

int main(){Director *director = new Director();IBuilder* builder = new ConcreteBuilder();director->setBuilder(builder);ProductComputer* computer = director->construct();computer->showHW();delete director;delete (ConcreteBuilder*)builder;//to free the interface and conreatebuilder
}

Notice
这里一定要注意对于创建者delete时需要使用下面这样：

delete (ConcreteBuilder*)builder;

否则的话只会析构Ibuilder而不会析构ConcreteBuilder

输出如下：

Constructor of Director
Constructor of Interface Builder
Constructor of Product
Constructor of ConcreteBuilder
=============================
Computer Hardware List:
-----------------------------
CPU:  Intel Core i7-13700KF
RAM:  Kingston FURY 32GB DDR5
DISK: WD SSD M.2(NVMe) 500G
=============================
Destructor of Director
Destructor of ConcreteBuilder
Destructor of Interface Builder
Destructor of Product

建造者模式与工厂模式的区别

在看完上面代码后，我们应该对建造者模式有了一定了解，我们可以看出：建造者模式更加关注与零件装配的顺序。然而工厂模式不需要关注这么多，只需创建实例即可。