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An LR-parser can detect a syntactic error as soon as __________

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An LR-parser can detect a syntactic error as soon as __________

(a) The parsing starts

(b) It is possible to do so a left-to-right scan of the input

(c) It is possible to do so a right-to-left scan of the input

(d) Parsing ends

I have been asked this question during an online interview.

Question is taken from LR Parser in chapter Bottom Up Parsing of Compiler

1 Answer

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Best answer
The correct answer is (b) It is possible to do so a left-to-right scan of the input

Best explanation: Error is found when it the input string is scanned.

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