man3/fcloseall.3

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  17 .TH FCLOSEALL 3  2006-12-27 "GNU" "Linux Programmer's Manual"
  18 .SH NAME
  19 fcloseall \- close all open streams
  20 .SH SYNOPSIS
  21 .B #define _GNU_SOURCE
  22 .B #include <stdio.h>
  23 .sp
  24 .B int fcloseall(void);
  25 .SH DESCRIPTION
  26 The
  27 .BR fcloseall ()
  28 function closes all of the calling process's open streams.
  29 Buffered output for each stream is written before it is closed
  30 (as for
  31 .BR fflush (3));
  32 buffered input is discarded.
  33
  34 The standard streams,
  35 .IR stdin ,
  36 .IR stdout ,
  37 and
  38 .IR stderr
  39 are also closed.
  40 .SH "RETURN VALUE"
  41 This function returns 0 if all files were successfully closed;
  42 on error,
  43 .B EOF
  44 is returned.
  45 .SH "CONFORMING TO"
  46 This function is a GNU extension.
  47 .SH "SEE ALSO"
  48 .BR close (2),
  49 .BR fclose (3),
  50 .BR fflush (3),
  51 .BR fopen (3),
  52 .BR setbuf (3),
  53 .BR feature_test_macros (7)