너에게제공 - 가상함수(Shape 클래스)

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class Shape
{
protected:
    int x, y;
public:
    Shape(int x=0, int y=0) { this->x = x; this->y = y;}
    void setOrigin(int x, int y) { this->x = x; this->y = y; }
    virtual void draw() { cout <<"Shape Draw" << endl; }
    void printPosition() { cout << "x : " << x << ", y : " << y << endl; }
};

class Rectangle : public Shape
{
        private:
        int width, height;
        public:
    Rectangle (int x=0, int y=0, int w=5, int h=10) :Shape(x,y)
        {
                width=w;
                height=h;
        }
    void setWidth(int w)
        {
                width=w;
        }
    void setHeight(int h)
        {
                height=h;
        }
    void draw()
        {
                cout<<"Rectangle draw"<<endl;
        }
    void printPosition()
        {
                Shape::printPosition();
                cout<<"width:"<<width<<"height:"<<height<<endl;
        }
};
class Circle : public Shape
{
private: int radius;
public: Circle(int x=0, int y=0, int r=5):Shape(x,y)
                {
                        radius=r;
                }
                void setRadius(int r)
                {
                        radius=r;
                }
                void draw()
                {
                        cout<<"Circle draw"<<endl;
                }
                void printPosition()
                {
                        Shape::printPosition();
                        cout<<"r:"<<radius;
                }
};

int main()
{
    Shape *ps = new Rectangle();  // 상향 형변환
    ps->draw();

    Shape *ps1 = new Circle();   // 상향형변환
    ps1->draw();

    delete ps;
    delete ps1;
}

네어게제공

가상함수(Shape 클래스)

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