_mkdir, _wmkdir

Article
06/05/2017

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The latest version of this topic can be found at _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