Question

Give a grammer for the set of integer number in c.

Answer 1

Your syntax allows +0, 01, and +09. Try this instead

(number) ::= 0 | (nonzero unsigned number) | (sign)(nonzero unsigned number)

(sign) ::= + | -

(nonzero unsigned number) ::= (nonzero digit)(digits)

(nonzero digit) ::= 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9

(digit) ::= 0 | (nonzero digit)

(digits) ::= | (digits)(digit)

Answer 2

Answer:

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