Unformatted wide character I/O

Unformatted wide character I/O subroutines are used when a program requires code set-independent I/O for characters from multibyte code sets. For example, use the fgetwc or getwc subroutine to input a multibyte character. If the program uses the getc subroutine to input a multibyte character, the program must call the getc subroutine once for each byte in the multibyte character.

Wide character input subroutines read multibyte characters from a stream and convert them to wide characters. The conversion is done as if the subroutines call the mbtowc and mbstowcs subroutines.

Wide character output subroutines convert wide characters to multibyte characters and write the result to the stream. The conversion is done as if the subroutines call the wctomb and wcstombs subroutines.

The LC_CTYPE category of the current locale affects the behavior of wide character I/O subroutines.