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fgetwc ? 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 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. |
The fgetwc function returns the next wide-character from the stream, or WEOF. |
Apart from the usual ones, there is |
EILSEQ |
The data obtained from the input stream does not form a valid character. |
ISO/ANSI C, UNIX98 |
fputwc(3), fgetws(3), ungetwc(3) |
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. |