Mac Developer Library Developer


This manual page is part of Xcode Tools version 5.0

To obtain these tools:

If you are running a version of Xcode Tools other than 5.0, view the documentation locally:

  • In Xcode

  • In Terminal, using the man(1) command

Reading manual pages

Manual pages are intended as a quick reference for people who already understand a technology.

  • To learn how the manual is organized or to learn about command syntax, read the manual page for manpages(5).

  • For more information about this technology, look for other documentation in the Apple Developer Library.

  • For general information about writing shell scripts, read Shell Scripting Primer.

FCLOSE(3)                BSD Library Functions Manual                FCLOSE(3)

     fclose, fcloseall -- close a stream

     Standard C Library (libc, -lc)

     #include <stdio.h>

     fclose(FILE *stream);


     The fclose() function dissociates the named stream from its underlying file or set of functions.  If
     the stream was being used for output, any buffered data is written first, using fflush(3).

     The fcloseall() function calls fclose() on all open streams.

     Upon successful completion 0 is returned.  Otherwise, EOF is returned and the global variable errno is
     set to indicate the error.  In either case no further access to the stream is possible.

     The fclose() function may also fail and set errno for any of the errors specified for the routines
     close(2) or fflush(3).

     The fclose() function does not handle NULL arguments; they will result in a segmentation violation.
     This is intentional - it makes it easier to make sure programs written under FreeBSD are bug free.
     This behaviour is an implementation detail, and programs should not rely upon it.

     close(2), fflush(3), fopen(3), setbuf(3)

     The fclose() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

     The fcloseall() function first appeared in FreeBSD 7.0.

BSD                             April 22, 2006                             BSD

Reporting Problems

The way to report a problem with this manual page depends on the type of problem:

Content errors
Report errors in the content of this documentation with the feedback links below.
Bug reports
Report bugs in the functionality of the described tool or API through Bug Reporter.
Formatting problems
Report formatting mistakes in the online version of these pages with the feedback links below.