\u0012 (C99)\U000012 (C99)\x12 (encoding-dependent)\022 (encoding-dependent)\u{12} (C++23)\x{12} (C++23, encoding-dependent)\o{022} (C++23, encoding-dependent)\U00000012\u0012\x12 (encoding-dependent)\022 (encoding-dependent)\u0012\u{12}\u0012\x12\12\000012=12%12