Float can contain up to seven digits in total, not just following the decimal point â so, for example, 321.1234567 cannot be stored in float because it has 10 digits. If greater precisionâmore digitsâis necessary, the double type is used.
This animal may have sharp spines, but it isn't a porcupine! It's one of two types of primitive egg-laying mammals, or monotremes. (The other is the duck-billed platypus.).
Monotremesâunusual mammals. There are three classes, or main types, of mammals: monotremes, marsupials, and placental mammals. Monotremes are the most primitive, and there are only three species: the duck-billed platypus and two species of echidna. These mammals have hair and produce milk, but they also lay eggs.