Syntax

#include <direct.h>
char *_getcwd(char *pathbuf, int n);

• getcwd gets the full path name of the current working directory and stores it in the buffer pointed to by pathbuf. The integer argument n specifies the maximum length for the path name. An error occurs if the length of the path name, including the terminating null character, exceeds n characters.

  If the pathbuf argument is NULL, _getcwd uses malloc to reserve a buffer of at least n bytes to store the path name. If the current working directory string is more than n bytes, a large enough buffer will be allocated to contain the string. You can later free this buffer using the _getcwd return value as the argument to free.

• getcwd returns pathbuf. If an error occurs, _getcwd returns NULL and sets errno to one of the following values: compact break=fit.

  Value

  Meaning
  ENOMEM
  Not enough storage space available to reserve n bytes (when pathbuf is NULL).
  ERANGE
  The path name is longer than n characters.
  EOS2ERR
  An OS/2 call failed. Use _doserrno to obtain more information about the return code.

This example stores the name of the current working directory (up to _MAX_PATH characters) in a buffer. The value of _MAX_PATH is defined in <stdlib.h>.

#include <direct.h>#include <stdio.h>
#include <stdlib.h>

int main(void)
{
   char buffer[_MAX_PATH];

   if (NULL == getcwd(buffer, _MAX_PATH))
      perror("getcwd error");
   printf("The current directory is %s.\n", buffer);
   return 0;

   /****************************************************************************
      The output should be similar to:

      The current directory is E:\C_OS2\MIG_XMPS
   ****************************************************************************/
}

• chdir
  
• fullpath
  
• getdcwd
  
• getdrive
  
• malloc

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