btowc function — Converts a multibyte character to a wide character
wint_t btowc(int c)
The btowc
function returns
a wide character representation of c
, which is a multibyte character that can
be represented in a single byte (as an unsigned
char
). If c
is not a valid one-byte, multibyte
character, or if c
is EOF
, WEOF
is returned.