#include"iostream.h"
#include"math.h"
class circle 
{private:
     float f_mr;
 public:	  
    circle()
	 {f_mr=0;
	 }
	 ~circle()
	 {cout<<" now destory the object of circle!"<<endl;
	 }
    float area(float r);
	float volume(float r);
};
float circle::area(float r)
{return 3.14*r*r;
}
float circle::volume(float r)
{return 0;
}



class yuanzhu:public circle//定義圓柱類；
{private:
	float f_mh1;
	//circle cc;
 public:
	yuanzhu(float r,float h1):circle()//,cc()//構造函數(shù);
	{f_mh1=0;	  
	 }
    ~yuanzhu()//構析函數(shù)
 	{cout<<"now destroying the object of yuanzhu!"<<endl;
	}
    float area(float r,float h1);
	float volume(float r,float h1);
};
float yuanzhu::area(float r,float h1)
{return 2*3.14*r*r+2*3.14*r*h1;
}
float yuanzhu::volume(float r,float h1)
{return 3.14*r*r*h1;
} 



class zhui:public circle//定義圓錐類；
{private:
	float f_mh2;
public:
	zhui()//構造函數(shù);
	{f_mh2=0;
	}
	~zhui()//構析函數(shù)
    {cout<<"now destroying the object of zhui!"<<endl;
	}
    float area(float r,float h2);
	float volume(float r,float h2);

};
float zhui::area(float r,float h2)
{return 3.14*r*r+3.14*r*sqrt(r*r+h2*h2);
}
float zhui::volume(float r,float h2)
{return 1.0/3.0*3.14*r*r*h2;
}



void main()
{float r,h1,h2;
 cout<<"請輸入圓的半徑、圓柱的高、圓錐的高："<<endl;
 cin>>r>>h1>>h2;
 circle *c;
 yuanzhu *y;
 zhui *z;
 cout<<"圓的面積："<<c->area(r)<<endl;
 cout<<"圓的體積："<<c->volume(r)<<endl;
 cout<<"圓柱的表面積："<<y->area(r,h1)<<endl;
 cout<<"圓柱的體積："<<y->volume(r,h1)<<endl;
 cout<<"圓錐的表面積："<<z->area(r,h2)<<endl;
 cout<<"圓錐的體積："<<z->volume(r,h2)<<endl;
 
}