3030\u0033\u0030 (C99)\U000033\U000030 (C99)\x33\x30 (encoding-dependent)\063\060 (encoding-dependent)\u{33}\u{30} (C++23)\x{33}\x{30} (C++23, encoding-dependent)\o{063}\o{060} (C++23, encoding-dependent)\U00000033\U00000030\u0033\u0030\x33\x30 (encoding-dependent)\063\060 (encoding-dependent)\u0033\u0030\u{33}\u{30}\u0033\u0030\x33\x30\33\30\000033\000030=33=30%33%30