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FGETWC
Section: Linux Programmer's Manual (3)Updated: 1999-07-25
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NAME
fgetwc, getwc - read a wide character from a FILE streamSYNOPSIS
#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 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
ISO/ANSI C, UNIX98NOTES
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.
SEE ALSO
fputwc(3), fgetws(3), ungetwc(3), unlocked_stdio(3)