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FGETWC
Section: Linux Programmer's Manual (3)
Updated: 1999-07-25
Index
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NAME
fgetwc, getwc - read a wide character from a FILE stream
SYNOPSIS
#include <stdio.h>
#include <wchar.h>
wint_t fgetwc(FILE *stream);
wint_t getwc(FILE *stream);
DESCRIPTION
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).
RETURN VALUE
The
fgetwc()
function returns the next wide-character
from the stream, or
WEOF.
ERRORS
Apart from the usual ones, there is
- EILSEQ
-
The data obtained from the input stream does not
form a valid character.
CONFORMING TO
C99, POSIX.1-2001.
NOTES
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.
SEE ALSO
fgetws(3),
fputwc(3),
ungetwc(3),
unlocked_stdio(3)
COLOPHON
This page is part of release 3.27 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/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- CONFORMING TO
-
- NOTES
-
- SEE ALSO
-
- COLOPHON
-
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