Question

关于c++的问题，求解答

#include<iostream>
using namespace std;
class container{
public:
float radius;
virtual float area(float radius)=0;
virtual float volume(float radius)=0;
};
class cube:public container{//正方体
public:
cube(float a=0);
float area(float radius);
float volume(float radius);
};
cube::cube(float a)
{
radius=a;
}

float cube::area(float radius)
{
return (radius*radius*6);
}

float cube::volume(float radius)
{
return (radius*radius*radius);
}

class sphere:public container{//球体
public:
sphere(float a=0);
float area(float radius);
float volume(float radius);
};
sphere::sphere(float a)
{
radius=a;
}
float sphere::area(float radius)
{
return (4*radius*radius);
}
float sphere::volume(float radius)
{
return (4*radius*radius*radius/3);
}
class cylinder:public container{//圆柱体
private:
float h;
public:
cylinder(float a=0,float b=0);
float area(float radius,float h);
float volume(float radius,float h);
};
float cylinder::area(float radius,float h)
{
return (2*radius*radius+2*radius*h);
}
float cylinder::volume(float radius,float h)
{
return (radius*radius*h);
}
int main()
{
cube c(2);
sphere s(2);
cylinder cc(2,2);
cout<<c.area<<" "<<c.volume<<endl;
cout<<cc.area;
return 0;
}
有问题额，求各位大大们解答，小弟感激不尽
错误都是指向cylinder cc(2,2)这一行，求指导

Answer 1

Answer 2

错误信息也不贴出来，不会提问题啊!

追问

我想啊，可是太多了百度不让贴，超出字数了- -