UML 类图之间关系

//Dependency
class Boat{
    Boat(){}
};
class Man{
    Man(){}
    void river_crossing(Boat boat){}
};

//Association
class Grade{
    Grade(){}
};
class Student{
    Student();
private:
    Grade grade;
};

//Aggreation
#define N 10
class Child{
    Child();
};
class Family{
    Family();
private:
    Child child[N];
};

//Composition
class Room{
public:
    Room(){}
};

class House{
public:
    House(){
        room = new Room;
    }
private:
    Room *room;
};

//Relization
class Gun{
public:
    virtual ~Gun()=0;
    virtual void shoot()=0;
};
class AK47 :public Gun{
    virtual ~AK47() override;
    void shoot() override{
        std::cout<<"AK47 shooting"<<std::endl;
    }
};

class People{
public:
    People();
};
class Student :public People{
public:
    Student();
};