半小时内结贴！一个简单的考试题！大家帮忙啊解决方法

半小时内结贴！一个简单的考试题！大家帮忙啊！
#include <iostream.h>
class   Shape{
public:
virtual   float   area(){return   0.0;}
virtual   float   volume(){return   0.0;}
virtual   void   printShapeName()=0;
};
class   Point:public   Shape{
public:
Point(float   a=0,float   b=0){x=a;y=b;}
virtual   void   printShapeName(){cout < < "点: ";}
float   GetX(){return   x;}
float   GetY(){return   y;}
private:
float   x,y;
};
class   Circle:public   Point{
public:
Circle(float   r=0.0,float   x=0.0,float   y=0.0):Point(x,y)
{radius=r> 0?r:0;}
float   getRadius(){return   radius;}
virtual   float   area(){return   3.1415*radius*radius;}
virtual   void   printShapeName(){cout < < "圆: ";}
private:
float   radius;
};
class   Cylinder:public   Circle{
Cylinder(float   h=0.0,float   r=0.0,float   x=0.0,float   y   =0.0):Circle(r,x,y)
{height=h> 0?h:0;}
float   volume()
{
float   r=Vircle::getRadius();
return   3.14159   *   r   *   r   *   height;
}
virtual   void   printShapeName(){cout < < "圆柱: ";}
private:
float   height;
};
void   main(){
Shape   *p;
Point   pt(4,5);Circle   cr(6,2,10);Cylinder   cy(15,8,100,10);
p=&pt;
p-> printShapeName();
cout < < "x= " < <pt.GetX() < < ",y= " < <pt.GetY() < < ",面积= " < <int   (p-> area()) < < ",体积= " < <p-> volume() < <endl;
p=&cy;
p-> printShapeName();
cout < < "x= " < <cy.GetX() < < ",y= " < <cy.GetY() < < ",面积= " < <int   (p-> area()) < < ",体积= " < <int   (p-> volume()) < <endl;
p=&cr;
p-> printShapeName();
cout < < "x= " < <cr.GetX() < < ",y= " < <cr.GetY() < < ",面积= " < <int   (p-> area()) < < ",体积= " < <int   (p-> volume()) < <endl;
}

实在找不到错错哪了！谢谢了啊！快啊~马上就要交了！
D:\C++\3.cpp(22)   :   warning   C4244:   'return '   :   conversion   from   'double '   to   'float ',   possible   loss   of   data
D:\C++\3.cpp(32)   :   error   C2653:   'Vircle '   :   is   not   a   class   or   namespace   name
D:\C++\3.cpp(33)   :   warning   C4244:   'return '   :   conversion   from   'double '   to   'float ',   possible   loss   of   data
D:\C++\3.cpp(41)   :   error   C2248:   'Cylinder::Cylinder '   :   cannot   access   private   member   declared   in   class   'Cylinder '
                D:\C++\3.cpp(28)   :   see   declaration   of   'Cylinder::Cylinder '
执行   cl.exe   时出错.

------解决方案--------------------
你的错误实在太多，我改了一下，代码如下：（编译能过，但是逻辑问题没仔细看了）
#include <iostream.h>
class Shape{
public:
virtual double area(){return 0.0;}
virtual double volume(){return 0.0;}