Recent questions tagged compiler-design - GATE CSE Doubts

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Gatebook Compiler Design
Which of the following would be least likely to be stored in the symbol table of a compiler? A. the type of an identifier B. the location where an identifier will be stored C. the number of bytes required for a particular named type D. the type of a complex expression Answer is Option D, but how?

asked 2 hours ago in Compiler Design by neeraj_bhatt (235 points) | 3 views

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Techtud-Compiler
Recursive descent parsing can use left recursive grammars. Is this statement True or False?

asked 9 hours ago in Compiler Design by srestha (636 points) | 9 views

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Three address code: GATE FORUM
Do we need to declare $b-c$ the second time? It can be used from $t_1$ right?

asked 2 days ago in Compiler Design by Debapaul (615 points) | 17 views

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ACE Test -Compiler Doubt
Which is not a token in C code? $A)\rightarrow$ $B)\uparrow$ where we use ‘$\rightarrow$’ in C code?

asked 3 days ago in Compiler Design by srestha (636 points) | 13 views

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Self doubt:Compiler
Someone plz solve the doubt for this question https://gateoverflow.in/302805/gate2019-43 Why ans is not 2?

asked 3 days ago in Compiler Design by srestha (636 points) | 21 views

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madeeasy compier design
Consider the following grammar which is not LL(1) because LL(1) table contain multiple entry for same production. S-->aAbB/ bAaB/epsilon A-->S B-->S The number of entries have multiple productions in LL(1) table are ________.

asked 4 days ago in Compiler Design by suchithreddy (7 points) | 2 views

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applied gate:compiler design
A) B) C) D)

asked 4 days ago in Compiler Design by abhinav649 (50 points) | 24 views

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Ace Academy test series : Compiler Design

asked 4 days ago in Compiler Design by Chirag Shilwant (150 points) | 25 views

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GATE GURU: DAG
What does the intermediate $+$ signify?

asked Jan 12 in Compiler Design by Debapaul (615 points) | 11 views

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Self doubt : Compiler Design
No of tokens in Question 1. b - = a ; Question 2. c>>=d ;

asked Jan 10 in Compiler Design by Chirag Shilwant (150 points) | 26 views

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GATE FORUM COMPILER DESIGN
Ans given is $D$ but in Dragon Book creation of DAG, Three address code is mentioned under $intermediate-code$ $generation$ so only 2 and 4 should be the ans right?

asked Jan 7 in Compiler Design by Debapaul (615 points) | 5 views

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SINGLE SUBJECT : COMPILER DESIGN (GATE - 2020) Question 7 (Made Easy)

asked Jan 6 in Compiler Design by Mk Utkarsh (472 points) | 31 views

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ME Test Series Greibach Normal Form
I have also read in a non-strict version ‘epsilon’ is allowed. Source: https://en.wikipedia.org/wiki/Greibach_normal_form Is it allowed or not? What should we consider for Gate.

asked Jan 4 in Theory of Computation by sladewinter (7 points) | 21 views

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Self doubt-Compiler
Is linker error not a compiler error?

asked Jan 4 in Compiler Design by srestha (636 points) | 16 views

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Self Doubt CD
Doubt is regarding questions like: Minimum registers required to evaluate given three address code segment. Or Finding minimum temporary variable using SSA. Here, Do we ignore dead code or not as code optimization is not in syllabus?

asked Jan 3 in Compiler Design by tp21 (228 points) | 2 views

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Made easy single test series 2020

asked Jan 2 in Compiler Design by Jyoti Kumari97 (19 points) | 31 views

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Madeeasy test series - How many lookaheads are present?

asked Dec 31, 2019 in Compiler Design by luc_Bloodstone (33 points) | 12 views

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Madeeasy test series - Max number of reduce moves
Ans :- 49

asked Dec 31, 2019 in Compiler Design by luc_Bloodstone (33 points) | 20 views

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Compiler Design Doubt About identifiers
Which of the following results lexical error? int a;b; int a,b; int 1ab; int a_b; Anyone please clarify.

asked Dec 30, 2019 in Compiler Design by Shivateja MST (96 points) | 33 views

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Compiler Design Doubt on errors
Anyone please clarify,how to solve this question..

asked Dec 30, 2019 in Compiler Design by Shivateja MST (96 points) | 18 views

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Applied course Grand test 4 : Parsers
Consider the following CFG grammar over the non-terminals {X,Y,Z} and terminals {a,c,d} with the productions below and start symbol Z First(Z) is ____ A){a} B){a,d} C){a,c,d} D){a,c,d,ɛ} Which is the correct option,can anyone plz answer it?

asked Dec 26, 2019 in Compiler Design by vishal burnwal (117 points) | 28 views

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#Lexical analyzer
What is the token count of a-=10; ?

asked Dec 26, 2019 in Compiler Design by rahulkrdev10 (6 points) | 7 views

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Compiler design self doubt
Number of shift and Goto entries are same in SLR(1) and CLR(1). a. True b. False

asked Dec 26, 2019 in Compiler Design by Chirag Shilwant (150 points) | 17 views

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Madeeasy Test Series - SSA form
Doubt :- In solution they used a variable more than once in LHS but in SSA form I think we always use new variable in LHS. Solution they have given:

asked Dec 25, 2019 in Compiler Design by luc_Bloodstone (33 points) | 16 views

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Ace Mock TEst Q64
What is the difference between dynamically typed and untyped language?

asked Dec 22, 2019 in Compiler Design by ssap09 (42 points) | 3 views

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Self Doubt: Compilers
What will be the DAG and the syntax tree of the following expression $a+ -(b+c)$ I think both will be the same and will look like this

asked Dec 16, 2019 in Compiler Design by Debapaul (615 points) | 10 views

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Compiler Design Made Easy
Minimum number of temporary variables needed in $3$ $address$ $code$ representation of this expression $a+b*c-d/(b*c)$ is_____________

asked Dec 16, 2019 in Compiler Design by Debapaul (615 points) | 26 views

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GATEGURU WorkBook : CD

asked Dec 13, 2019 in Compiler Design by Debapaul (615 points) | 4 views

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Madeessy test series
the given options are A). Lexical error B). Syntax error C). Semantic error D). None of these I am confused that why answer is lexical error can canyone explain?

asked Dec 13, 2019 in Compiler Design by pass_i0n (14 points) | 14 views

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Testbook Compiler Design test doubt
Will it give a lexical error or a syntactic error?

asked Dec 12, 2019 in Compiler Design by Abhipsa Mishra (15 points) | 28 views

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Self doubt in number of tokens
Should we consider ternary operator as a single token or two tokens?

asked Dec 12, 2019 in Compiler Design by Abhipsa Mishra (15 points) | 18 views

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MADE EASY: GATE 2020 COMPILERS
Consider the following grammarsG1 and G2 G1: S→ aS | ε G2: S→Sa | ε Select the correct option. 1. G1 and G2 generate different parse tree for all strings. 2. L(G1) ≠ L(G2). 3. G1 is LR(0) while G2 is not LR(0) 4. G2 is LR(0) while G1 is not LR(0)

asked Dec 6, 2019 in Compiler Design by Debapaul (615 points) | 22 views

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Made Easy: CD
How many states are there in LR(0) parsing of the following grammar $E→ E+T / T$ $T→ T*F / F$ $F→ (E)/id$

asked Dec 6, 2019 in Compiler Design by Debapaul (615 points) | 16 views

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Compiler Design Self Doubt Gate Guru Notes
So in which phase does the $Intermediate$ $code$ $representation$ lies?

asked Dec 5, 2019 in Compiler Design by Debapaul (615 points) | 16 views

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Ace Test series Top down parsing SDT
Question Answer as per Ace As far as I know Tree is traversed in Left most (DFS) so correct answer should be “*+”.

asked Nov 30, 2019 in Compiler Design by priyesh9875 (59 points) | 19 views

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Count the number of Tockens
Count the number of Tokens a+=c; I guess u can understand my confusion, which is whether to consider $+=$ as a single tocken or not?

asked Nov 30, 2019 in Compiler Design by Debapaul (615 points) | 17 views

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Ace Compiler design CS_GATE_2020_45
Can anyone tell how to solve the below question?

asked Nov 15, 2019 in Compiler Design by Pratyush Priyam Kuan (736 points) | 124 views

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Gatebook: Compiler Design
Consider the context-free grammar G : S → aSbS | bSaS | ε How many parse trees are there for the sentence ababababab ? Doubt: When can Catalan number be used for finding number of parse trees? And what is the general procedure for finding the number of parse trees in a question like this where the number of such trees is large? Answer is 42.

asked Nov 14, 2019 in Compiler Design by Sambhrant Maurya (335 points) | 18 views

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Made Easy Test Series Compiler Design (topic wise Q.16)

asked Nov 13, 2019 in Compiler Design by arya_stark (64 points) | 26 views

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Made easy test series compiler design
Consider the following program code with 5 temporary variables a, b, c, d, e: a=20 b=25 c=a*b d=c+a e=3 c=e*d e=c+b Assume that all operations take their operands from register, minimum number of register needed to execute this code without spilling ____

asked Nov 10, 2019 in Compiler Design by Jyoti Kumari97 (19 points) | 68 views

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