fcloseall(3)               Library Functions Manual               fcloseall(3)

NAME
       fcloseall - close all open streams

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #define _GNU_SOURCE         /* See feature_test_macros(7) */
       #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.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(7).

       +-----------------------------+---------------+------------------------+
       |Interface                    | Attribute     | Value                  |
       +-----------------------------+---------------+------------------------+
       |fcloseall ()                 | Thread safety | MT-Unsafe race:streams |
       +-----------------------------+---------------+------------------------+
       The fcloseall() function does not lock the streams, so it is not
       thread-safe.

STANDARDS
       GNU.

SEE ALSO
       close(2), fclose(3), fflush(3), fopen(3), setbuf(3)

Linux man-pages 6.7               2023-10-31                      fcloseall(3)