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).

       ┌──────────────────┬───────────────┬─────────┐
       │Interface         │ Attribute     │ Value   │
       ├──────────────────┼───────────────┼─────────┤
       │fgetwc(), getwc() │ Thread safety │ MT-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

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