*Conan The Librarian
Reads the next character from a specified file, and converts it
to a wide-character code.
wint_t fgetwc (FILE *file_ptr);
A pointer to the file to be accessed.
Upon successful completion, the fgetwc function returns the wide-
character code read from the file pointed to by file_ptr and
converted to type wint_t. If the file is at end-of-file, the
end-of-file indicator is set, and WEOF is returned. If an I/O
read error occurred, then the error indicator is set, and WEOF is
Applications can use ferror or feof to distinguish between an
error condition and an end-of-file condition.
x The wide-character code of the character read.
WEOF Indicates the end-of-file or an error. If a
read error occurs, the function sets errno to
one of the following:
o EALREADY - An operation is already in
progress on the same file.
o EBADF - The file descriptor is not valid.
o EILSEQ - Invalid character detected.