fgetwc, getwc — read a wide character from a FILE stream
#include <stdio.h> #include <wchar.h>
wint_t fgetwc( |
FILE * | stream); |
wint_t getwc( |
FILE * | stream); |
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).
Apart from the usual ones, there is
The data obtained from the input stream does not form a valid character.
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.
fgetws(3), fputwc(3), ungetwc(3), unlocked_stdio(3)
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