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6-6 【CPP0028】以圆类Circle及立体图形类Solid为基础设计圆柱类Cylinder

分数 10

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作者 C++多态编程

单位 石家庄铁道大学

以点类Point及平面图形类Plane为基类公有派生圆类Circle，再以圆类Circle及立体图形类Solid为基类公有派生圆柱类Cylinder，main(void)函数完成对圆柱类Cylinder的测试。

 

和昨天的圆锥类似

代码 复制，粘贴就好了 随便改改就对了 好简单

#define PI 3.14159
class Circle:public Point,public Plane
{
private:
    double radius;

public:

    Circle(double a=0.0, double b=0.0, double c=0.0)
    {
        setX(a);
        setY(b);
        radius = c;
        cout<<"Circle Constructor run"<<endl;
    }

    Circle(const Circle &p):Point(p)
    {
        radius=p.radius;
        cout<<"Circle CopyConstructor run"<<endl;
    }

    ~Circle()
    {
       cout<<"Circle Destructor run"<<endl;
    }

    void setR(double r)
    {
       radius=r;
    }

    double getR()const
    {
       return radius;
    }

    void show()const
    {
        cout << "Circle(Point(" << "X=" << getX() << "," << "Y=" << getY() << ")," << "Radius=" << radius << ")";
    }

    double area() const
    {
        return radius * PI * radius;
    }

    double length() const
    {
        return 2 * radius * PI;
    }
    
};

class Cylinder:public Circle,public Solid 
{
private:
    double height;

public:
    Cylinder(double a=0.0, double b=0.0, double c=0.0, double d=0.0):Circle(a,b,c)
    {
        height=d;
        cout<<"Cylinder Constructor run"<<endl;
    }

    Cylinder(const Cylinder &p):Circle(p)
    {
        height=p.height;
        cout<<"Cylinder CopyConstructor run"<<endl;
    }

    ~Cylinder()
    {
        cout<<"Cylinder Destructor run"<<endl;
    }

    void show()const
    {
        cout<<"Cylinder(Circle(Point(X="<<getX()<<",Y="<<getY()<<"),Radius="<<getR()<<"),"<<"Height="<<height<<")";
    }

    double s_Area()const
    {
        return getR()*getR()*PI*2+2*PI*getR()*height;
    }

    double volume()const
    {
        return getR()*getR()*PI*height;
    }

     void setH(double a)
     {
         height=a;
     }

     double getH() const
     {
         return height;
     }
     
};

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