l2provider.h

软件体系结构的层次模型

// L2Provider.h: interface for the L2Provider class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_L2PROVIDER_H__412A1FED_FAE5_4169_A39C_A31AFBEA2689__INCLUDED_)
#define AFX_L2PROVIDER_H__412A1FED_FAE5_4169_A39C_A31AFBEA2689__INCLUDED_

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

#include "stdafx.h"
#include<iostream.h>
#include"L1Provider.h"

class L2Provider  
{
public:
	virtual void L2Service()=0;
	void setLowerLayer(L1Provider *l1){level1=l1;}
protected:
	L1Provider *level1;


};

#endif // !defined(AFX_L2PROVIDER_H__412A1FED_FAE5_4169_A39C_A31AFBEA2689__INCLUDED_)