C++ 디자인 패턴의 템플릿 메소드 패턴에 대한 간략한 소개

[code]int main(){
    AbstractClass *pAbstractA = new ConcreteClassA;
    pAbstractA->TemplateMethod();  //Output: ConcreteA Operation1 ConcreteA Operation2

    AbstractClass *pAbstractB = new ConcreteClassB;
    pAbstractB->TemplateMethod();   //Output: ConcreteB Operation1 ConcreteB Operation2

    if(pAbstractA) delete pAbstractA;
    if(pAbstractB) delete pAbstractB;

    return 0;
}

[code]class AbstractClass{
public:
    void TemplateMethod(){  //统一的对外一个接口
        PrimitiveOperation1();
        PrimitiveOperation2();
    }
protected:
    virtual void PrimitiveOperation1(){  //原始操作1
        std::cout << "Default Operation1\n";
    }
    virtual void PrimitiveOperation2(){  //原始操作2
        std::cout << "Default Operation2\n";
    }
};

class ConcreteClassA: public AbstractClass{
protected:
    //重载方法1和2
    virtual void PrimitiveOperation1(){
        std::cout << "ConcreteA Operation1\n";
    }
    virtual void PrimitiveOperation2(){
        std::cout << "ConcreteA Operation2\n";
    }
};

class ConcreteClassB: public AbstractClass{
protected:
    virtual void PrimitiveOperation1(){
        std::cout << "ConcreteB Operation1\n";
    }
    virtual void PrimitiveOperation2(){
        std::cout << "ConcreteB Operation2\n";
    }
};