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Which statement is true ?

Which statement is true ? Correct Answer Every SLR grammar is unambiguous but not every unambiguous grammar is SLR

The correct answer is option 3.

Key Points

  • Canonical LR is the most powerful parser as compared to other LR parsers. Order: LR(0)< SLR < LALR < CLR. So, it is False.
  • Here, LP Linear Precedence. Every grammar generated by LP is CFG but all CFG's are not LP. So, it is False.
  • SLR grammar cannot be ambiguous but if any unambiguous grammar has shift-reduce conflict then it cannot be parsed with an SLR parser. True
  • LR(k) has a k-look ahead which can always see ahead of the input in order to avoid backtracking. So, it is False. 

∴ Hence the correct answer is Every SLR grammar is unambiguous but not every unambiguous grammar is SLR.

Related Questions

From an alloy, two specimens are machined and tested separately under tension and compression. The engineering stress-strain curves as well as the true stress-true strain curves for tension and compression are plotted in the same diagram. Identify the correct statements:
P. The engineering stress-strain curves in tension and compression are identical.
Q. The true stress-true strain curve in compression is lower than the true stresstrue strain curve in tension due to Bauschinger effect.
R. The true stress-true strain curve in tension is above the corresponding engineering stress-strain, curve.
S. The true stress-true strain curve in tension and compression are identical.
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