wctomb() in System Libraries STDLIB

IMPORT_C int wctomb(char *s, wchar_t wc);

Converts a wide character to a multibyte character

`char *s`	multibyte character
`wchar_t wc`	wide character

int

If s is null, the return value is true (non-zero) if multibyte characters have state-dependent encodings, or false (zero) if they do not.