fgetwc, getwc: přečte široký znak ze streamu FILE

Originální popis anglicky: fgetwc, getwc - read a wide character from a FILE stream

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <stdio.h>
 
#include <wchar.h>
 
wint_t fgetwc(FILE *stream);
wint_t getwc(FILE *stream);

POPIS / INSTRUKCE

The fgetwc function is the wide-character equivalent of the fgetc 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).

NÁVRATOVÁ HODNOTA

The fgetwc function returns the next wide-character from the stream, or WEOF.

CHYBY / ERRORY

Apart from the usual ones, there is

EILSEQ

The data obtained from the input stream does not form a valid character.

ODPOVÍDAJÍCÍ

ISO/ANSI C, UNIX98

NOTES

The behaviour of fgetwc depends on the LC_CTYPE category of the current locale. In the absence of additional information passed to the fopen 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.

SOUVISEJÍCÍ

fgetws(3), fputwc(3), ungetwc(3), unlocked_stdio(3)