#include"iostream.h"
#include"math.h"
class circle //圓類的定義（抽象類）
{private:
     float f_mr;
 public:	  
    circle()//構(gòu)造函數(shù);
	 {f_mr=0;
	 }
	 ~circle()//構(gòu)析函數(shù)
	 {cout<<" now destory the object of circle!"<<endl;
	 }
    virtual   float area(float r)=0;//純虛函數(shù)
	virtual float volume(float r)=0;//純虛函數(shù)
};




class yuanzhu:public circle//定義圓柱類；
{private:
	float f_mh1;

 public:
	yuanzhu(float r,float h1):circle()//構(gòu)造函數(shù);
	 {f_mh1=0;
	  
	 }
  ~yuanzhu()//構(gòu)析函數(shù)
 	{cout<<"yuanzhu類對(duì)象已被撤消"<<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(gòu)造函數(shù);
	{f_mh2=0;
	}
	~zhui()//構(gòu)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(qǐng)輸入圓的半徑、圓柱的高、圓錐的高:"<<endl;
 cin>>r>>h1>>h2;
 yuanzhu *y;
 zhui *z;
 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;
}