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;
}