читать широкий символ из потока ФАЙЛОВ (read a wide character from a FILE stream)
Имя (Name)
fgetwc, getwc - read a wide character from a FILE stream
Синопсис (Synopsis)
#include <stdio.h>
#include <wchar.h>
wint_t fgetwc(FILE *stream);
wint_t getwc(FILE *stream);
Описание (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).
Возвращаемое значение (Return value)
On success, fgetwc() returns the next wide-character from the
stream. Otherwise, WEOF is returned, and errno is set to
indicate the error.
Ошибки (Error)
Apart from the usual ones, there is
EILSEQ The data obtained from the input stream does not form a
valid character.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│fgetwc(), getwc() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008, C99.
Примечание (Note)
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.
Смотри также (See also)
fgetws(3), fputwc(3), ungetwc(3), unlocked_stdio(3)
