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FCLOSE(3)                  Linux Programmer's Manual                 FCLOSE(3)
NAME
       fclose - close a stream
SYNOPSIS
       #include <stdio.h>
       int fclose(FILE *stream);
DESCRIPTION
       The  fclose() function flushes the stream pointed to by stream (writing
       any buffered output data using fflush(3))  and  closes  the  underlying
       file descriptor.
RETURN VALUE
       Upon  successful completion, 0 is returned.  Otherwise, EOF is returned
       and errno is set to indicate the error.  In either  case,  any  further
       access  (including  another  call to fclose()) to the stream results in
       undefined behavior.
ERRORS
       EBADF  The file descriptor underlying stream is not valid.
       The fclose() function may also fail and set errno for any of the errors
       specified for the routines close(2), write(2), or fflush(3).
ATTRIBUTES
       For   an   explanation   of   the  terms  used  in  this  section,  see
       attributes(7).
       +----------+---------------+---------+
       |Interface | Attribute     | Value   |
       +----------+---------------+---------+
       |fclose()  | Thread safety | MT-Safe |
       +----------+---------------+---------+
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C89, C99.
NOTES
       Note that fclose() flushes only the user-space buffers provided by  the
       C  library.   To  ensure that the data is physically stored on disk the
       kernel buffers must be  flushed  too,  for  example,  with  sync(2)  or
       fsync(2).
SEE ALSO
       close(2), fcloseall(3), fflush(3), fileno(3), fopen(3), setbuf(3)
COLOPHON
       This  page  is  part of release 4.15 of the Linux man-pages project.  A
       description of the project, information about reporting bugs,  and  the
       latest     version     of     this    page,    can    be    found    at
       https://www.kernel.org/doc/man-pages/.
GNU                               2016-12-12                         FCLOSE(3)