Question

c语言如何编程求圆体积和表面积

是球体。。。

Answer 1

#include<iostream.h>
class CShape
{
public:
CShape()
{
}
virtual~CShape()
{
}
virtual double getFa()=0;
virtual double getVo()=0;

private:
static const double PI;
};

const double CShape::PI=3.14159;
class CSphere:public CShape
{
public:
CSphere()
{
m_dr=0;
}
CSphere(double dr)
{
m_dr=dr;
}
virtual ~CSphere()
{
}

virtual double getFa()//表面积
{
return 4*CShape::PI*m_dr*m_dr;
}
virtual double getVo()//体积
{
return (4/3)*CShape::PI*m_dr*m_dr*m_dr;
}
private:
double m_dr;
};

void main()
{

CShape* p=new CSphere(3);
cout<<p->getFa()<<endl;
cout<<p->getVo()<<endl;
delete p;
}

Answer 2

球体体积和表面积公式知道吧？

已知半径r的话,
#define pi 3.1415926
double V=4*pi*r*r*r/3;double S=4*pi*r*r;

Answer 3

情况要具体，不然别人不好回答，比如把具体的问题罗列出来

Answer 4

4pi*r*r*r/3