A number that uses a decimal point is a float. Floats are used to represent numbers that have fractional parts, which make them suitable for calculations that require more precision than whole numbers (like integers).
The other options are:
- Binary: A number system that uses only 0 and 1.
- Long integer: A type of integer that can hold larger values but does not include decimal points.
- Boolean: A data type with only two possible values: true or false.