_unlink, _wunlink

Delete a file.

int_unlink(constchar\filename);*

int_wunlink(constwchar_t\filename);*

Routine Required Header Compatibility
_unlink <io.h> and <stdio.h> Win 95, Win NT
_wunlink <io.h> or <wchar.h> Win NT

For additional compatibility information, see Compatibility in the Introduction.

Libraries

LIBC.LIB Single thread static library, retail version
LIBCMT.LIB Multithread static library, retail version
MSVCRT.LIB Import library for MSVCRT.DLL, retail version

Return Value

Each of these functions returns 0 if successful. Otherwise, the function returns –1 and sets errno to EACCES, which means the path specifies a read-only file, or to ENOENT, which means the file or path is not found or the path specified a directory.

Parameter

filename

Name of file to remove

Remarks

The _unlink function deletes the file specified by filename. _wunlink is a wide-character version of _unlink; the filename argument to _wunlink is a wide-character string. These functions behave identically otherwise.

Generic-Text Routine Mappings

TCHAR.H Routine _UNICODE & _MBCS Not Defined _MBCS Defined _UNICODE Defined
_tunlink _unlink _unlink _wunlink

Example

/* UNLINK.C: This program uses _unlink to delete UNLINK.OBJ. */

#include <stdio.h>

void main( void )
{
   if( _unlink( "unlink.obj" ) == -1 )
      perror( "Could not delete 'UNLINK.OBJ'" );
   else
      printf( "Deleted 'UNLINK.OBJ'\n" );
}

Output

Deleted 'UNLINK.OBJ'

File Handling Routines

See Also _close, remove