第十一周项目实践1————点-圆-圆柱类族设计

/*copyright(c)2016.烟台大学计算机学院
* All rights reserved,
* 文件名称：text.Cpp
* 作者：吴敬超
* 完成日期：2016年5月4日
* 版本号：codeblock
*
* 问题描述:  点-圆-圆柱类族设计
* 输入描述:
* 程序输出： 输出结果
*/
#include<iostream>
using namespace std;
class Point
{
public:
Point(double x=0,double y=0);
double getX()
{
return x;
}
double getY()
{
return y;
}
void setPoint(double,double);
void show();
protected:
double x;
double y;
};
Point::Point(double x,double y)
{
this->x=x;
this->y=y;
}
void Point::setPoint(double x,double y)
{
this->x=x;
this->y=y;
}
void Point::show()
{
cout<<"该点坐标为"<<x<<","<<y<<endl;
}
class Circle:public Point
{
public:
Circle(double a=0,double b=0,double r=0);
void setRadius(double);
void show();
double getRadius( ) const
{
return rd;
}
double area()const;
protected:
double rd;
};
Circle::Circle(double a,double b,double r):Point(a,b),rd(r){}
void Circle::setRadius(double r)
{
rd=r;
}
double Circle::area()const
{
return 3.14*rd*rd;
}
void Circle::show()
{
cout<<"圆的面积为的"<<area()<<endl;
}
class Cylinder:public Circle
{
public:
Cylinder(double a=0,double b=0,double r=0,double he=0);
void setHeight(double);
double area()const;
void show()const;
double volume()const;
double getH()const
{
return h;
}
private:
double h;
};
Cylinder::Cylinder(double a,double b,double r,double he):Circle(a,b,r),h(he){}
double Cylinder::area()const
{
return 2*Circle::area()+2*3.14*rd*h;
}
void Cylinder::setHeight(double h)
{
this->h=h;
}
double Cylinder::volume()const
{
return 3.14*rd*rd*h;
}
void Cylinder::show()const
{
cout<<"圆柱体的面积为"<<area()<<endl;
cout<<"圆柱的体积为"<<volume()<<endl;
}
int main()
{
Cylinder cy1(3.5,6.4,5.2,10);
cout<<"\noriginal cylinder:\nx=";
cy1.show();
cy1.setHeight(15);
cy1.setRadius(7.5);
cy1.setPoint(5,5);
cout<<"\nnew cylinder:\n";
cy1.show();
return 0;
}