Computers and Technology, 10.05.2021 20:00, jake2920

Write a BNF grammar that describes the structure of a nonterminal called . Assume that contains an optional sign followed by exactly two decimal digits, the first of which cannot be a 0. Thus 23, 91, and 40 are legal, but 9, 01, and 123 are not. Using your grammar from Exercise 5a, show a parse tree for the value 90.

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Write a BNF grammar that describes the structure of a nonterminal called . Assume that contains an o...