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 non-locking 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 3.22 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/.