\u0010 (C99)\U000010 (C99)\x10 (encoding-dependent)\020 (encoding-dependent)\u{10} (C++23)\x{10} (C++23, encoding-dependent)\o{020} (C++23, encoding-dependent)\U00000010\u0010\x10 (encoding-dependent)\020 (encoding-dependent)\u0010\u{10}\u0010\x10\10\000010=10%10