第十四天打卡

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为基类公有派生球类Sphere，main(void)函数完成对球类Sphere的测试。

#include <iostream>
using namespace std;
//点类Point
class Point{
private:
    double x;
    double y;
public:
    Point(double xv=0,double yv=0);/*构造函数*/
    Point(const Point &p);         /*拷贝构造*/
    ~Point();                      /*析构函数*/
    void setX(double xv);          /*设置X坐标*/
    void setY(double yv);          /*设置Y坐标*/
    double getX()const;            /*获取X坐标*/
    double getY()const;            /*获取Y坐标*/
    virtual void show()const;      /*显示*/
};
Point::Point(const double xv,const double yv){/*构造函数*/
    x=xv;
    y=yv;
    cout<<"Point Constructor run"<<endl;
}
Point::Point(const Point &p){/*拷贝构造*/
    x=p.x;
    y=p.y;
    cout<<"Point CopyConstructor run"<<endl;
}
Point::~Point(){/*析构函数*/
    cout<<"Point Destructor run"<<endl;
}
void Point::setX(double xv){/*设置X坐标*/
    x=xv;
}
void Point::setY(double yv){/*设置Y坐标*/
    y=yv;
}
double Point::getX()const{/*获取X坐标*/
    return x;
}
double Point::getY()const{/*获取Y坐标*/
    return y;
}
void Point::show()const{/*显示*/
    cout<<"Point(X="<<x<<",Y="<<y<<")";
}
//平面图形类Plane
class Plane{
public:
    virtual double length()const=0;/*周长*/
    virtual double area()const=0;  /*面积*/
};
//立体图形类Solid
class Solid{
public:
    virtual double volume()const=0;/*体积*/
    virtual double s_Area()const=0;/*表面积*/
};

/*请在这里填写答案*/

void show(Point *p){/*点基类的显示函数*/
    p->show();
}
void length(Plane *p){/*平面图形的周长函数*/
    cout<<"Length="<<p->length()<<endl;
}
void area(Plane &p){/*平面图形的面积函数*/
    cout<<"Area="<<p.area()<<endl;
}

void volumn(Solid *s){/*立体图形的体积函数*/
    cout<<"Volumn="<<s->volume()<<endl;
}
void s_Area(Solid &s){/*立体图形的表面积函数*/
    cout<<"S_Area="<<s.s_Area()<<endl;
}
//主函数
int main(void){
    double  r;
    cin>>r;
    Sphere s1(1,2,3),s2(s1);
    show(&s1);
    cout<<endl;
    area(s1);
    length(&s1);
    s_Area(s1);
    volumn(&s1);
    s2.setR(r);
    show(&s2);
    cout<<endl;
    area(s2);
    length(&s2);
    s_Area(s2);
    volumn(&s2);
    return 0;
}

函数：

class Circle : public Point, public Plane
{
public:
    Circle(double x = 0, double y = 0, double r = 0) : Point(x, y), radius(r)
    {
        cout << "Circle Constructor run" << endl;
    }
    Circle(const Circle &c) : Point(c), radius(c.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 PI * radius * radius;
    }
    double length() const
    {
        return 2 * PI * radius;
    }
protected:
    static const double PI;
    double radius;
};
class Sphere : public Circle, public Solid
{
public:
    Sphere(double x = 0, double y = 0, double r = 0) : Circle(x, y, r)
    {
        cout << "Sphere Constructor run" << endl;
    }
    Sphere(const Sphere &s) : Circle(s)
    {
        cout << "Sphere CopyConstructor run" << endl;
    }
    ~Sphere()
    {
        cout << "Sphere Destructor run" << endl;
    }
    void show() const
    {
        cout << "Sphere(";
        Circle::show();
        cout << ")";
    }
    double s_Area() const
    {
        return 4 * PI * radius * radius;
    }
    double volume() const
    {
        return 4.0 / 3.0 * PI * radius * radius * radius;
    }
};
const double Circle::PI = 3.14159;
void show(const Sphere *s)
{
    s->show();
}
void area(const Circle &c)
{
    cout << "Area=" << c.area() << endl;
}
void length(const Circle *c)
{
    cout << "Length=" << c->length() << endl;
}
void s_Area(const Sphere &s)
{
    cout << "S_Area=" << s.s_Area() << endl;
}
void volumn(const Sphere *s)
{
    cout << "Volumn=" << s->volume() << endl;
}