1. Floating-point constants:
They are numeric values that contain decimal points and can contain exponents.
2. Octal constants:
They are a sequence of digits starting with 0 (zero) to 7.
3. Hexadecimal constants:
They are a of sequence of digits from 0 to 9 and A, B, C,D, E, F alphabet symbols that represent decimal numbers 10, 11, 12, 13, 14, and 15 respectively, preceded by ox or OX.
