VC下判断文件是否存在

VC下判断文件是否存在

2009-09-21 10:52:49 www.hackbase.com 来源：WoYiGui's BLoG

form:寂寞hacker 个人Blog方法1：#include #include #include void main( void ){ /* Check for existence */ if( (_access( "D:\\a.txt", 0 )) != -1 ) { printf( "File ACCESS.C exists ...

form:寂寞hacker 个人Blog

方法1：

#include

#include

#include

void main( void )

{

/* Check for existence */

if( (_access( "D:\\a.txt", 0 )) != -1 )

{

printf( "File ACCESS.C exists\n" );

/* Check for write permission */

if( (_access( "ACCESS.C", 2 )) != -1 )

printf( "File ACCESS.C has write permission\n" );

}

}

方法2：

if (INVALID_HANDLE_VALUE != CreateFile("D:\\a.txt", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL))

{

AfxMessageBox("File ACCESS.C exists\n");

}

方法3：

#define _WIN32_WINNT 0x0400

#include

#include

int main(int argc, char *argv[])

{

WIN32_FIND_DATA FindFileData;

HANDLE hFind;

printf ("Target file is %s.\n", argv[1]);

hFind = FindFirstFile(argv[1], &FindFileData);

if (hFind == INVALID_HANDLE_VALUE)

{

printf ("Invalid File Handle. GetLastError reports %d\n", GetLastError ());

return (0);

}

else

{

printf ("The first file found is %s\n", FindFileData.cFileName);

FindClose(hFind);

return (1);

}

}

方法4：

if (GetFileAttributes("c:\\1.txt") == -1)

MessageBox(0."Invalid File ","hehe",0)

else

MessageBox(0."The first file found ","haha",0)

方法5：

if (INVALID_HANDLE_VALUE != CreateFile("D:\\a.txt", 0, 0, NULL, OPEN_EXISTING, 0, NULL))

{

AfxMessageBox("File exists\n");

}