第十周项目二 点-圆-圆柱类族的设计

/*copyright(c)2016.烟台大学计算机学院
 * All rights reserved,
 * 文件名称：text.Cpp
 * 作者：舒文超
 * 完成日期：2016年4月30日
 * 版本号：vc++6.0
 * 问题描述:先设计一个点类，再以点类为基类
            设计一个圆类，再以圆类为基类设
            计一个圆柱类
 */
#include<iostream>
using namespace std;
#define Pi 3.1415926
class Point
{
private:
    double x,y;
public:
    Point(double xx,double yy):x(xx),y(yy){}
    void printXY()
    {
        cout<<"横坐标为:"<<x<<"\t纵坐标为:"<<y<<endl;
    }
    double getX()
    {
        return x;
    }
    double getY()
    {
        return y;
    }
};
class Circle:public Point
{
private:
    double r;
    double s;
    double perimeter;
public:
    Circle(double xx,double yy,double rr):Point(xx,yy),r(rr){}
    void printR()
    {
        cout<<"半径为:"<<r<<endl;
    }
    void calS()
    {
        s=Pi*r*r;
    }
    void calPerimeter()
    {
        perimeter=2.0*Pi*r;
    }
    void printS()
    {
        cout<<"面积为:"<<s<<endl;
    }
    void printPerimeter()
    {
        cout<<"周长为:"<<perimeter<<endl;
    }
    double getR()
    {
        return r;
    }
    double getS()
    {
        return Pi*r*r;
    }
    double getPerimeter()
    {
        return 2.0*Pi*r;
    }
};
class Cylinder:public Circle
{
private:
    double h;
    double area;
    double volume;
public:
    Cylinder(double xx,double yy,double rr,double hh):Circle(xx,yy,rr),h(hh){}
    double getH()
    {
        return h;
    }
    void CalArea()
    {
        area=Circle::getS()*2.0+Circle::getPerimeter()*h;
    }
    void CalVolume()
    {
        volume=Circle::getS()*h;
    }
    void printH()
    {
        cout<<"圆柱高为:"<<h<<endl;
    }
    void printArea()
    {
        cout<<"圆柱表面积为:"<<area<<endl;
    }
    void printVolume()
    {
        cout<<"圆柱体积为:"<<volume<<endl;
    }
};
int main()
{
    Point p(1.0,1.0);
    p.printXY();
    Circle c(1.0,1.0,1.0);
    c.calPerimeter();
    c.calS();
    c.printR();
    c.printS();
    c.printPerimeter();
    Cylinder C(1.0,1.0,1.0,2.0);
    C.printH();
    C.CalArea();
    C.CalVolume();
    C.printArea();
    C.printVolume();
    return 0;
}