title	_mkdir, _wmkdir | Microsoft Docs
ms.custom
ms.date	11/04/2016
ms.reviewer
ms.suite
ms.technology	cpp-standard-libraries
ms.tgt_pltfrm
ms.topic	article
apiname	_wmkdir _mkdir
apilocation	msvcrt.dll msvcr80.dll msvcr90.dll msvcr100.dll msvcr100_clr0400.dll msvcr110.dll msvcr110_clr0400.dll msvcr120.dll msvcr120_clr0400.dll ucrtbase.dll api-ms-win-crt-filesystem-l1-1-0.dll
apitype	DLLExport
f1_keywords	_mkdir tmkdir _tmkdir wmkdir _wmkdir
dev_langs	C++
helpviewer_keywords	_wmkdir function folders [C++], creating wmkdir function directories [C++], creating mkdir function tmkdir function _mkdir function _tmkdir function
ms.assetid	7f22d01d-63a5-4712-a6e7-d34878b2d840
caps.latest.revision	11
author	corob-msft
ms.author	corob
manager	ghogen
translation.priority.ht	cs-cz de-de es-es fr-fr it-it ja-jp ko-kr pl-pl pt-br ru-ru tr-tr zh-cn zh-tw

_mkdir, _wmkdir

Creates a new directory.

Syntax

  
      int _mkdir(  
   const char *dirname   
);  
int _wmkdir(  
   const wchar_t *dirname   
);  

Parameters

dirname
Path for a new directory.

Return Value

Each of these functions returns the value 0 if the new directory was created. On an error, the function returns -1 and sets errno as follows.

EEXIST
Directory was not created because dirname is the name of an existing file, directory, or device.

ENOENT
Path was not found.

For more information about these and other return codes, see _doserrno, errno, _sys_errlist, and _sys_nerr.

Remarks

The _mkdir function creates a new directory with the specified dirname. _mkdir can create only one new directory per call, so only the last component of dirname can name a new directory. _mkdir does not translate path delimiters. In Windows NT, both the backslash ( \) and the forward slash (/ ) are valid path delimiters in character strings in run-time routines.

_wmkdir is a wide-character version of _mkdir; the dirname argument to _wmkdir is a wide-character string. _wmkdir and _mkdir behave identically otherwise.

Generic-Text Routine Mappings

Tchar.h routine	_UNICODE and _MBCS not defined	_MBCS defined	_UNICODE defined
_tmkdir	_mkdir	_mkdir	_wmkdir

Requirements

Routine	Required header
_mkdir	<direct.h>
_wmkdir	<direct.h> or <wchar.h>

For more compatibility information, see Compatibility in the Introduction.

Libraries

All versions of the C run-time libraries.

Example

// crt_makedir.c  
  
#include <direct.h>  
#include <stdlib.h>  
#include <stdio.h>  
  
int main( void )  
{  
   if( _mkdir( "\\testtmp" ) == 0 )  
   {  
      printf( "Directory '\\testtmp' was successfully created\n" );  
      system( "dir \\testtmp" );  
      if( _rmdir( "\\testtmp" ) == 0 )  
        printf( "Directory '\\testtmp' was successfully removed\n"  );  
      else  
         printf( "Problem removing directory '\\testtmp'\n" );  
   }  
   else  
      printf( "Problem creating directory '\\testtmp'\n" );  
}  

Sample Output

Directory '\testtmp' was successfully created  
 Volume in drive C has no label.  
 Volume Serial Number is E078-087A  
  
 Directory of C:\testtmp  
  
02/12/2002  09:56a      <DIR>          .  
02/12/2002  09:56a      <DIR>          ..  
               0 File(s)              0 bytes  
               2 Dir(s)  15,498,690,560 bytes free  
Directory '\testtmp' was successfully removed  

See Also

Directory Control
_chdir, _wchdir
_rmdir, _wrmdir