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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'