pointer.cpp

来自「此为本书的配套光盘.本书不但由浅入深地讲解了软件保护技术」· C++ 代码 · 共 58 行

/********************************************************************

	Copyright (c) Beijing Feitian Technologies
	http://www.FTSafe.com

	File :		Pointer.cpp	

	Created:	2003/11/04

	Author:		yihai
	
	Purpose:	?

	Revision:	?

*********************************************************************/

// Pointer.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <Windows.h>
#include <string.h>
#include <conio.h>

typedef void (* TPFN_ShowMsg)();

void ShowMsg()
{
	printf("ShowMsg\n");
}

DWORD g_ShowMsgEntry = (DWORD)ShowMsg;

int main(int argc, char* argv[])
{
	int  iData = 0x44434241;
	char* p;
	int*  q=&iData;
	
	p = (char*)q;

	char szBuf[128];
	memset(szBuf,0,128);
	strncpy(szBuf,p,4);

	printf("%s\n",szBuf);

	TPFN_ShowMsg pfnShowMsg =(TPFN_ShowMsg)g_ShowMsgEntry;

	pfnShowMsg();

	getch();
	
	return 0;
}