Numeric Types: Integers and Floats

Integers

Variables of Integer data type hold whole number values. There are two subtypes of integer data type in Rust, based on the number of bits occupied by a variable in memory.

Fixed Size Types

The fixed integer types have a specific number of bits in their notation. This notation is a combination of a letter and a number. The former denotes the category of the integer, whether it is, unsigned or signed, and the latter denotes the size of an integer, i.e., 8, 16, 32, 64.