_unlink, _wunlink

Delete a file.


int _unlink(
   const char *filename
int _wunlink(
   const wchar_t *filename


Name of file to remove.

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 a directory, or to ENOENT, which means the file or path is not found.

See _doserrno, errno, _sys_errlist, and _sys_nerr for more information on these, and other, return codes.


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.

By default, this function's global state is scoped to the application. To change this, see Global state in the CRT.

Generic-Text Routine Mappings

TCHAR.H routine _UNICODE & _MBCS not defined _MBCS defined _UNICODE defined
_tunlink _unlink _unlink _wunlink


Routine Required header
_unlink <io.h> and <stdio.h>
_wunlink <io.h> or <wchar.h>

For additional compatibility information, see Compatibility.

Code Example

This program uses _unlink to delete CRT_UNLINK.TXT.

// crt_unlink.c

#include <stdio.h>

int main( void )
   if( _unlink( "crt_unlink.txt" ) == -1 )
      perror( "Could not delete 'CRT_UNLINK.TXT'" );
      printf( "Deleted 'CRT_UNLINK.TXT'\n" );

Input: crt_unlink.txt

This file will be deleted.

Sample Output


See also

File Handling
remove, _wremove