II\u0049 (C99)\U000049 (C99)\x49 (encoding-dependent)\111 (encoding-dependent)\u{49} (C++23)\x{49} (C++23, encoding-dependent)\o{111} (C++23, encoding-dependent)\U00000049\u0049\x49 (encoding-dependent)\111 (encoding-dependent)\u0049\u{49}\u0049\x49\49\000049=49%49