A number that uses a decimal point is a float. Floats (or floating-point numbers) are used to represent real numbers that can have fractional parts, which are indicated by the decimal point.
The other options you mentioned:
- Binary represents numbers using only 0s and 1s.
- Long integer (or simply "long") represents whole numbers but does not include a decimal point.
- Boolean represents truth values (true or false) and does not involve numerical values.