shape.h

此文件可以能帮你求体积

// Shape.h: interface for the Shape class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_SHAPE_H__3D9F2790_E309_44B3_A908_0E56D905ACE6__INCLUDED_)
#define AFX_SHAPE_H__3D9F2790_E309_44B3_A908_0E56D905ACE6__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include <iostream.h>

class Shape  
{
public:
	Shape(){ Draw(); }
	virtual ~Shape(){ Erase(); }
	void Draw(){ cout << "\nBase::Draw()\n"; }
	void Erase(){ cout << "Base::Erase()\n\n"; }
};

#endif // !defined(AFX_SHAPE_H__3D9F2790_E309_44B3_A908_0E56D905ACE6__INCLUDED_)