Which of the following approach can be used to implement lexical analyser?a)Use a lexical analyzer generator.b)Write the lexical analyzer in a conventional systems-programming languagec)Write the lexical analyzer in assembly language.d)All of theseCorrect answer is option 'D'. Can you explain this answer? - EduRev Computer Science Engineering (CSE) Question

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Which of the following approach can be used to implement lexical analyser?

a)
Use a lexical analyzer generator.
b)
Write the lexical analyzer in a conventional systems-programming language
c)
Write the lexical analyzer in assembly language.
d)
All of these

Correct answer is option 'D'. Can you explain this answer?

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Which of the following approach can be used to implement lexical analy...

Lexical Analysis is the first phase of the compiler also known as a scanner. It converts the High-level input program into a sequence of tokens. The following approach can be used to implement a lexical analyzer are:

Use a lexical analyzer generator such as a lex compiler to produce a lexical analyzer from a regular expression-based specification.
Write the lexical analyzer in a conventional systems-programming language using the I/O facilities of that language to read the input.
Write the lexical analyzer in assembly language in assembly language and explicitly manage the reading of input.

Hence, the correct option is (D).

Answered by Gate Gurus · View profile

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Which of the following approach can be used to implement lexical analyser?a)Use a lexical analyzer generator.b)Write the lexical analyzer in a conventional systems-programming languagec)Write the lexical analyzer in assembly language.d)All of theseCorrect answer is option 'D'. Can you explain this answer?

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