TEMPNAM(3)

NAME
       tempnam - create a name for a temporary file

SYNOPSIS
       #include <<stdio.h>>

       char *tempnam(const char *dir, const char *pfx);

DESCRIPTION
       The  tempnam() function generates a unique temporary file-
       name using up to five characters of  pfx,  if  it  is  not
       NULL.   The directory to place the file is searched for in
       the following order:-
              a)     The directory specified by  the  environment
                     variable TMPDIR, if it is writable.
              b)     The directory specified by the argument dir,
                     if it is not NULL.
              c)     The directory specified by P_tmpdir.
              d)     The directory /tmp.

       The storage for the filename is allocated by malloc(), and
       so can be free'd by the function free().

RETURN VALUE
       The  tempnam()  function  returns  a pointer to the unique
       temporary filename, or NULL if a unique filename cannot be
       generated.

ERRORS
       EEXIST Unable to generate a unique filename.

CONFORMING TO
       SVID 3, BSD 4.3

SEE ALSO
       mktemp(3) mkstemp(3) tmpnam(3) tmpfile(3)