Decimal floating-point literal syntax 1+ 1? digit 1.1 . 1.2+ 1.2 digit 1.2.1? %exponent 1+ 1 digit 1.1 . 1.2? %exponent 1+ 1 digit 1.1 %exponent 2? 2 f 2 F 2 l 2 L Exponent: 1 e 1 E 2? 2 + 2 - 3+ 3 digit