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Which of the following statement is true?

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Which of the following statement is true?

(a) SLR powerful than LALR

(b) LALR  powerful than Canonical LR parser

(c) Canonical LR  powerful than LALR parser

(d) The parsers SLR= Canonical LR=LALR

This question was posed to me in examination.

I need to ask this question from Implementation of the Translation Specified by Syntax-Directed Definitions topic in chapter Syntax Directed Definition and Translations of Compiler

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The correct answer is (c) Canonical LR  powerful than LALR parser

Best explanation: LR > LALR > SLR In terms of the parser.

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