oooo\u006F\u006F (C99)\U00006F\U00006F (C99)\x6F\x6F (encoding-dependent)\157\157 (encoding-dependent)\u{6F}\u{6F} (C++23)\x{6F}\x{6F} (C++23, encoding-dependent)\o{157}\o{157} (C++23, encoding-dependent)\U0000006F\U0000006F\u006F\u006F\x6F\x6F (encoding-dependent)\157\157 (encoding-dependent)\u006F\u006F\u{6F}\u{6F}\u006F\u006F\x6F\x6F\6F\6F\00006F\00006F=6F=6F%6F%6F