组合模式(c++实现)

#include<iostream>
#include<vector>

//抽象组件类
class Component
{
public:
    virtual void operation()=0;
};
//叶子组件类
class Leaf: public Component{
public:
    void operation()override
    {
        std::cout<<"leaf operation()"<<std::endl;
    }
};
//组合组件类
class Composite:public Component{
private:
    std::vector<Component*>components;
public:
    void addComponent(Component* component)
    {
        components.push_back(component);
    }
    void operation()override
    {
        std::cout<<"Composite operation()"<<std::endl;
        for(Component* component:components)
        {
            component->operation();
        }
    }
};
int main()
{
    Component* leaf=new Leaf();
    Composite* composite=new Composite();
    composite->addComponent(leaf);
    composite->operation();
    delete composite;
    delete leaf;
    return 0;
}