Question: Suppose that in a certain programming language numbers are constructed according to the following rules: (a) A sign is optional. (b) The value field consists

Suppose that in a certain programming language numbers are constructed according to the following rules:

(a) A sign is optional.

(b) The value field consists of two nonempty parts, separated by a decimal point.

(c) An exponent field is optional. When present, the exponent field must consist of the letter e and a signed two-digit integer.

Find a grammar that formalizes these requirements.

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