Hexadecimal floating-point literal syntax 1 0x 1 0X 2.0+ 2.0? 2.0 digit_0_to_f 2.0 digit_0_to_F 2.1 . 2.2+ 2.2 digit_0_to_f 2.2 digit_0_to_F 2.2.1 %exponent 2.0+ 2.0 digit_0_to_f 2.0 digit_0_to_F 2.1 . 2.2 %exponent 2.0+ 2.0 digit_0_to_f 2.0 digit_0_to_F 2.1 %exponent 3? 3 f 3 F 3 l 3 L Exponent: 1 p 1 P 2? 2 + 2 - 3+ 3 digit_0_to_9