fgetwc, getwc — read a wide character from a FILE stream
#include <stdio.h> #include <wchar.h>
wint_t fgetwc( |
FILE *stream) ; |
wint_t getwc( |
FILE *stream) ; |
The fgetwc
() function is the
wide-character equivalent of the fgetc(3) function. It reads
a wide character from stream
and returns it. If the
end of stream is reached, or if ferror(stream)
becomes true,
it returns WEOF
. If a
wide-character conversion error occurs, it sets errno
to EILSEQ and returns WEOF
.
The getwc
() function or
macro functions identically to fgetwc
(). It may be implemented as a macro,
and may evaluate its argument more than once. There is no
reason ever to use it.
For nonlocking counterparts, see unlocked_stdio(3).
Apart from the usual ones, there is
The data obtained from the input stream does not form a valid character.
The behavior of fgetwc
()
depends on the LC_CTYPE
category of the current locale.
In the absence of additional information passed to the
fopen(3) call, it is
reasonable to expect that fgetwc
() will actually read a multibyte
sequence from the stream and then convert it to a wide
character.
This page is part of release 3.24 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/.
Copyright (c) Bruno Haible <haibleclisp.cons.org> This is free documentation; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. References consulted: GNU glibc-2 source code and manual Dinkumware C library reference http://www.dinkumware.com/ OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html ISO/IEC 9899:1999 Modified Tue Oct 16 23:18:40 BST 2001 by John Levon <mozcompsoc.man.ac.uk> |