Question

The methodology to show an error when the analyzer faces a keyword over an user’s input is based on:

(a) rule priority

(b) longest match rule

(c) keyword-out rule

(d) none of mentioned

I had been asked this question in an interview for internship.

I'm obligated to ask this question of Lexical Analysis topic in section Regular Expressions and Languages of Automata Theory

Answer 1

The correct option is (a) rule priority

To explain I would say: The lexical analyzer follows the rule priority where its prioritizes keywords over an input it gets with the same name as that of the keyword and thus generates an error.