""" (obsolete)"" (obsolete)"\u0022 (C99)\U000022 (C99)\"\x22 (encoding-dependent)\042 (encoding-dependent)\u{22} (C++23)\x{22} (C++23, encoding-dependent)\o{042} (C++23, encoding-dependent)\"\U00000022\u0022\x22 (encoding-dependent)\042 (encoding-dependent)\"\u0022\u{22}\u0022\"\x22\22\000022=22%22