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Which of the following is true for operator precedence parsing?

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Which of the following is true for operator precedence parsing?

(a) For all pair of non-terminal

(b) For all pair of non-terminals

(c) To delimit the handle

(d) None of the mentioned

I got this question in an online quiz.

Query is from Lexical Analysis topic in section Compiler Introduction of Compiler

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The correct option is (a) For all pair of non-terminal

To explain: There are two important properties for these operator precedence parsers is that it does not appear on the right side of any production and no production has two adjacent non-terminals. Implying that no production right side is empty or has two adjacent non-terminals. So accordingly to property option (A) is correct.

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