SYNOPSIS
       #define _GNU_SOURCE
       #include <stdio.h>

       int fcloseall(void);

DESCRIPTION
       The  fcloseall()  function  closes  all  of  the calling process's open
       streams.  Buffered output for each  stream  is  written  before  it  is
       closed (as for fflush(3)); buffered input is discarded.

       The standard streams, stdin, stdout, and stderr are also closed.

RETURN VALUE
       This  function  returns  0  if  all  files were successfully closed; on
       error, EOF is returned.

CONFORMING TO
       This function is a GNU extension.

SEE ALSO
       close(2),   fclose(3),    fflush(3),    fopen(3),    setbuf(3),    fea-
       ture_test_macros(7)

COLOPHON
       This  page  is  part of release 3.23 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.