fprintf | isprint | iswdigit | localeconv | tolower | |
fscanf | ispunct | iswgraph | mblen | toupper | |
isalnum | isspace | iswlower | mbstowcs | towlower | |
isalpha | isupper | iswprint | mbtowc | towupper | |
isblank | iswalnum | iswpunct | setlocale | wcscoll | |
iscntrl | iswalpha | iswspace | strcoll | wcstod | |
isdigit | iswblank | iswupper | strerror | wcstombs | |
isgraph | iswcntrl | iswxdigit | strtod | wcsxfrm | |
islower | iswctype | isxdigit | strxfrm | wctomb |