4.4.\u0034\u002E (C99)\U000034\U00002E (C99)\x34\x2E (encoding-dependent)\064\056 (encoding-dependent)\u{34}\u{2E} (C++23)\x{34}\x{2E} (C++23, encoding-dependent)\o{064}\o{056} (C++23, encoding-dependent)\U00000034\U0000002E\u0034\u002E\x34\x2E (encoding-dependent)\064\056 (encoding-dependent)\u0034\u002E\u{34}\u{2E}\u0034\u002E\x34\x2E\34\2E\000034\00002E=34=2E%34%2E