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FGETWC

Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
Index Return to Main Contents
 

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. In the event of an error, errno is set to indicate the cause.  

ERRORS

Apart from the usual ones, there is
EILSEQ
The data obtained from the input stream does not form a valid character.
 

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
fgetwc(), getwc() Thread safetyMT-Safe
 

CONFORMING TO

POSIX.1-2001, POSIX.1-2008, C99.  

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 4.13 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/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
ATTRIBUTES
CONFORMING TO
NOTES
SEE ALSO
COLOPHON





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