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Which among the following statement is correct? Statement 1: When the analyzer scans ‘int’ and ‘intvalue’, it is not able to decide whether the int leads to a keyword or an identifier. Statement 2: Longest Match Rule

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Which among the following statement is correct?

Statement 1: When the analyzer scans ‘int’ and ‘intvalue’, it is not able to decide whether the int leads to a keyword or an identifier.

Statement 2: Longest Match Rule

(a) Statement 1 is assertion, Statement 2 is the reason

(b) Statement 1 is assertion, Statement 2 is the solution

(c) There is no such Statement 2

(d) This is not a function of Lexical Analyzer

This question was addressed to me in my homework.

Question is taken from Lexical Analysis in section Regular Expressions and Languages of Automata Theory

1 Answer

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The correct answer is (b) Statement 1 is assertion, Statement 2 is the solution

For explanation: The Longest Match rule states that the lexeme scanned should be determined on the basis of longest match among all the token available.

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