l3provider.h

软件体系结构的层次模型

// L3Provider.h: interface for the L3Provider class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_L3PROVIDER_H__F05E03FC_0AAE_4B00_BC4C_5E6FD5047136__INCLUDED_)
#define AFX_L3PROVIDER_H__F05E03FC_0AAE_4B00_BC4C_5E6FD5047136__INCLUDED_

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

#include "stdafx.h"
#include<iostream.h>
#include"L2Provider.h"

class L3Provider  
{
public:
	virtual void L3Service()=0;
    void setLowerLayer(L2Provider *l2){level2=l2;}
protected:
	L2Provider *level2;


};

#endif // !defined(AFX_L3PROVIDER_H__F05E03FC_0AAE_4B00_BC4C_5E6FD5047136__INCLUDED_)