auau\u0061\u0075 (C99)\U000061\U000075 (C99)\x61\x75 (encoding-dependent)\141\165 (encoding-dependent)\u{61}\u{75} (C++23)\x{61}\x{75} (C++23, encoding-dependent)\o{141}\o{165} (C++23, encoding-dependent)\U00000061\U00000075\u0061\u0075\x61\x75 (encoding-dependent)\141\165 (encoding-dependent)\u0061\u0075\u{61}\u{75}\u0061\u0075\x61\x75\61\75\000061\000075=61=75%61%75