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       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 nonlocking counterparts, see unlocked_stdio(3).


       The  fgetwc()  function  returns the next wide-character from the stream, or WEOF.  In the
       event of an error, errno is set to indicate the cause.


       Apart from the usual ones, there is

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


       For an explanation of the terms used in this section, see attributes(7).

       │InterfaceAttributeValue   │
       │fgetwc(), getwc() │ Thread safety │ MT-Safe │


       POSIX.1-2001, POSIX.1-2008, C99.


       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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