Arguments

 

buffer

   Pointer to a character string large enough to hold the directory
   specification.

   If buffer is a NULL pointer, getcwd obtains size bytes of space
   using malloc. In this case, you can use the pointer returned by
   getcwd as the argument in a subsequent call to free.
 

size

   The length of the directory specification to be returned.
 

 . . .

   An optional argument that can be either 1 or 0. If you specify 1,
   the directory specification is returned in OpenVMS format. If you
   specify 0, the directory specification (pathname) is returned in
   UNIX style format. If you omit this argument, getcwd returns the
   filename according to your current command-language interpreter
   (CLI).