xixi\u0078\u0069 (C99)\U000078\U000069 (C99)\x78\x69 (encoding-dependent)\170\151 (encoding-dependent)\u{78}\u{69} (C++23)\x{78}\x{69} (C++23, encoding-dependent)\o{170}\o{151} (C++23, encoding-dependent)\U00000078\U00000069\u0078\u0069\x78\x69 (encoding-dependent)\170\151 (encoding-dependent)\u0078\u0069\u{78}\u{69}\u0078\u0069\x78\x69\78\69\000078\000069=78=69%78%69