GATE CS 2014 Set 1 — Question 44
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Compiler Design → Syntax Analysis → Parsing Conflicts
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Question
A canonical set of items is given belowOn input symbol the set has
Correct answer
(D) neither a shift-reduce nor a reduce-reduce conflict.
Solution
The item indicates that a shift is possible only on the input symbol . The item indicates a reduce action. The question specifies the input symbol is . Since the shift item does not match , no shift is possible. A reduce action might be possible if is in , but without a shift action available, there cannot be a shift-reduce conflict. There is only one reduce item, so no reduce-reduce conflict. Thus, neither conflict exists.
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