Answer
$([+ −] |e )[0 − 9]∗( \ / . |e)[0 − 9]∗$
Work Step by Step
All signed or unsigned numbers with or without a decimal point.
- A signed number has one of the prefixes + or −, and an unsigned number does not have a prefix.
-Represent the decimal point as \. to distinguish it from the single dot symbol for an arbitrary character.
--$([+ −] |e )[0 − 9]∗( \ / . |e)[0 − 9]∗$
