30 30 votes Which of the following statements is true?SLR parser is more powerful than LALRLALR parser is more powerful than Canonical LR parserCanonical LR parser is more powerful than LALR parserThe parsers SLR, Canonical CR, and LALR have the same power Compiler Design gate1998 compiler-design parsing normal lr-parser + – 🚩 Edit necessary | 👮 Umesh Shelke | 💬 “Option D required edit "Canonical CR" Should be => "Canonical LR"” Kathleen 16.3k views answer comment Share Follow Print See all 2 Comments 2 2 Comments reply ritiksri8 commented Dec 7, 2024 reply Follow flag CLR is better than LALR because it uses full LR(1) lookahead sets, ensuring precise parsing and handling all LR(1) grammars, whereas LALR merges states, potentially losing context and causing conflicts in some cases. 0 0 replyShare P0535_Yedidyah_Sagar commented Oct 7, 2025 reply Follow flag If number of states LR(0) = n1, number of states SLR = n2, number of states LALR = n3, number of states CLR = n4 then, n1 = n2 = n3 <= n4 1 1 replyShare Please log in or register to add a comment.
Best answer 38 38 votes $\text{SLR}$ parser is more powerful than $\text{LALR}$ . False .$\text{LALR}$ parser is more powerful than $\text{Canonical LR}$ parser . False .$\text{Canonical LR}$ parser is more powerful than $\text{LALR}$ parser. True.The parsers $\text{SLR, Canonical CR,}$ and $\text{LALR}$ have the same power. False.Correct answer : $C$ ankitrokdeonsns answered Nov 23, 2014 • edited Oct 30, 2025 by Umesh Shelke ankitrokdeonsns comment Share Follow See all 2 Comments 2 2 Comments reply talha hashim commented Jul 18, 2018 reply Follow flag CLR>LALR>SLR>LR(0) 6 6 replyShare `JEET commented Dec 7, 2019 reply Follow flag https://gateoverflow.in/118343/gate2017-2-6 0 0 replyShare Please log in or register to add a comment.
8 8 votes LR parsers in term of power $CLR>LALR>SLR>LR(0)$ Madhab answered Aug 2, 2016 • edited Oct 30, 2025 by Umesh Shelke Madhab comment Share Follow See all 3 Comments 3 3 Comments reply rishu_darkshadow commented Nov 9, 2017 reply Follow flag what about LR(1)..? it is more powerful than SLR(1) and LALR(1)... rt.? 0 0 replyShare Pritam Dutta commented Dec 23, 2017 reply Follow flag @rishu_darkshadow LR(1) is another name of CLR(1) 7 7 replyShare rishu_darkshadow commented Dec 23, 2017 reply Follow flag okzzz 0 0 replyShare Please log in or register to add a comment.
