Questions without a selected answer in Compiler Design / GATE Overflow for GATE CSE

Consider the following two sets:Set $\text{X}$Set $\text{Y}$P. Lexical Analyzer1. Abstract Syntax TreeQ. Syntax Analyzer2. TokenR. Intermediate Code Generator3. ...

Arjun

2.2k views

Arjun asked Feb 16

2 votes

1 answer

4

GATE CSE 2024 | Set 2 | Question: 19
Which of the following statements is/are FALSE? An attribute grammar is a syntax-directed definition $\text{(SDD)}$ in which the functions in the semantic rules have no side effects The attributes in a $\text{L}$-attributed definition ... $\text{L}$-attributed definitions based on $\text{LR(1)}$ grammar can be evaluated using a bottom-up parsing strategy

Which of the following statements is/are FALSE?An attribute grammar is a syntax-directed definition $\text{(SDD)}$ in which the functions in the semantic r...

Arjun

2.5k views

Arjun asked Feb 16

2 votes

1 answer

5

GATE CSE 2024 | Set 2 | Question: 30
Consider the following context-free grammar where the start symbol is $\text{S}$ and the set of terminals is $\{a, b, c, d\}$. \[ \begin{array}{l} S \rightarrow A a A b \mid B b B a \\ A \rightarrow c S \mid \epsilon \\ B \rightarrow d S \mid \epsilon \end{ ... blank $(4)$ blank $(1)$ $S \rightarrow B b B a$ $(2)$ $S \rightarrow A a A b$ $(3)$ blank $(4)$ blank

Consider the following context-free grammar where the start symbol is $\text{S}$ and the set of terminals is $\{a, b, c, d\}$.\[\begin{array}{l}S \rightarrow A a A b \mid...

Arjun

3.0k views

Arjun asked Feb 16

2 votes

1 answer

6

GATE CSE 2024 | Set 2 | Question: 33
Consider the following expression: $x[i]=(p+r) *-s[i]+u / w$. The following sequence shows the list of triples representing the given expression, with entries missing for triples $(1), (3)$, and $(6)$ ... $(1)$ [ ]$=s i \quad(3)-(0)(2) \quad(6)=[ ] x i$

Consider the following expression: $x[i]=(p+r) *-s[i]+u / w$. The following sequence shows the list of triples representing the given expression, with entries missing ...

Arjun

1.6k views

Arjun asked Feb 16

2 votes

1 answer

7

GATE CSE 2024 | Set 2 | Question: 55
Consider the following augmented grammar, which is to be parsed with a $\text{SLR}$ parser. The set of terminals is $\{a, b, c, d, \#, @\}$ \[ \begin{array}{l} S^{\prime} \rightarrow S \\ S \rightarrow S S|A a| b A c|B c| b ... $\operatorname{GOTO}\left(I_{0}, S\right)$ is __________.

Consider the following augmented grammar, which is to be parsed with a $\text{SLR}$ parser. The set of terminals is $\{a, b, c, d, \#, @\}$\[\begin{array}{l}S^{\prime} \r...

Arjun

2.5k views

Arjun asked Feb 16

1 votes

1 answer

8

GATE CSE 2024 | Set 1 | Question: 16
Which of the following is/are Bottom-Up Parser(s)? Shift-reduce Parser Predictive Parser LL$(1)$ Parser LR Parser

Which of the following is/are Bottom-Up Parser(s)?Shift-reduce ParserPredictive ParserLL$(1)$ Parser LR Parser

Arjun

2.1k views

Arjun asked Feb 16

3 votes

1 answer

9

GATE CSE 2024 | Set 1 | Question: 23
Consider the operator precedence and associativity rules for the integer arithmetic operators given in the table below. Operator Precedence Associativity + Highest Left - High Right * Medium Right / Low Right The value of the expression $3+1+5 * 2 / 7+2-4-7-6 / 2$ as per the above rules is ________.

Consider the operator precedence and associativity rules for the integer arithmetic operators given in the table below.Operator PrecedenceAssociativity+Highest Left-HighR...

Arjun

2.4k views

Arjun asked Feb 16

0 votes

2 answers

10

GATE CSE 2024 | Set 1 | Question: 27
Consider the following syntax-directed definition $\text{(SDD)}$. $S \rightarrow D H T U$ $ \left\{S.v a l = D.val + H.val + T.val + U.val\right\};$ $D \rightarrow ^{"} \mathrm{M}^{"} D_1$ ... the following options is the $\text{CORRECT}$ value computed by the $\text{SDD}$ (in the attribute $S.val$)? $45$ $50$ $55$ $65$

Consider the following syntax-directed definition $\text{(SDD)}$.$S \rightarrow D H T U$$ \left\{S.v a l = D.val + H.val + T.val + U.val\right\};$$D \rightarrow ^{"} \...

Arjun

1.9k views

Arjun asked Feb 16

0 votes

1 answer

11

GATE CSE 2024 | Set 1 | Question: 28
Consider the following grammar $G$, with $S$ as the start symbol. The grammar $G$ has three incomplete productions denoted by $(1), (2)$, and $(3)$ ... $R \rightarrow c R$ (1) $S \rightarrow R f$ (2) $T \rightarrow c T$ (3) $R \rightarrow c R$

Consider the following grammar $G$, with $S$ as the start symbol. The grammar $G$ has three incomplete productions denoted by $(1), (2)$, and $(3)$.$$\begin{aligned} & S ...

Arjun

1.6k views

Arjun asked Feb 16

0 votes

1 answer

12

GATE CSE 2024 | Set 1 | Question: 29
Consider the following pseudo-code. $L 1 : t 1 = -1$ $L 2: t 2 = 0$ $L 3: t 3 = 0$ $L 4: t 4 = 4 * t 3$ $L 5: t 5 = 4 * t 2$ $L 6: t 6 = t 5 * M$ $L 7: t 7 = t 4+t 6$ ... options CORRECTLY specifies the number of basic blocks and the number of instructions in the largest basic block, respectively? $6$ and $6$ $6$ and $7$ $7$ and $7$ $7$ and $6$

Consider the following pseudo-code.$L 1 : t 1 = -1$ $L 2: t 2 = 0$ $L 3: t 3 = 0$ $L 4: t 4 = 4 * t 3$$L 5: t 5 = 4 * t 2$$L 6: t 6 = t 5 * M$$L 7: t 7 = t 4+t 6$$L 8: t ...

Arjun

1.8k views

Arjun asked Feb 16

0 votes

1 answer

13

GATE CSE 2024 | Set 1 | Question: 49
Let $G=(V, \Sigma, S, P)$ be a context-free grammar in Chomsky Normal Form with $\Sigma=\{a, b, c\}$ and $V$ containing $10$ variable symbols including the start symbol $S$. The string $w=a^{30} b^{30} c^{30}$ is derivable from $S$. The number of steps (application of rules) in the derivation $S \rightarrow^* w$ is __________.

Let $G=(V, \Sigma, S, P)$ be a context-free grammar in Chomsky Normal Form with $\Sigma=\{a, b, c\}$ and $V$ containing $10$ variable symbols including the start symbol $...

Arjun

1.3k views

Arjun asked Feb 16

2 votes

1 answer

14

GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 26
Which attributes in the following grammar are synthesized? A.a B.b B.x C.c

Which attributes in the following grammar are synthesized?A.aB.bB.xC.c

GO Classes

809 views

GO Classes asked Feb 5

4 votes

1 answer

15

GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 52
Consider the following given grammar and the parse tree for the sentence $x + y * z.$ The first reduction made by the shift-reduce parser is labeled as 1, and we keep labeling in the same increasing order, such that the 8th (here, the ... labeled 3. $T \rightarrow T^* P$ will be labeled 6. $T \rightarrow T^* P$ will be labeled 7.

Consider the following given grammar and the parse tree for the sentence $x + y * z.$The first reduction made by the shift-reduce parser is labeled as 1, and we keep labe...

GO Classes

301 views

GO Classes asked Feb 5

4 votes

0 answers

16

GO Classes Test Series 2024 | Mock GATE | Test 14 | Question: 53
The grammar shown below is LL(k) for some value of k. What is the smallest value of k for which this grammar is LL(k)?

The grammar shown below is LL(k) for some value of k. What is the smallest value of k for which this grammar is LL(k)?

GO Classes

919 views

GO Classes asked Feb 5

0 votes

1 answer

17

compiler design tcompiler-design-timothy-g-griffin
6. Generate code for the following C program using any code generation algorithm. [3 Marks] main() { int x, a, b, c, d, e; x= a + b -( c + d ) * e }

6. Generate code for the following C program using any code generation algorithm. [3 Marks] main() { int x, a, b, c, d, e; ...

Ebrahim

142 views

Ebrahim asked Jan 31

3 votes

1 answer

18

GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 38
Consider the syntax-directed translation given by the following grammar and semantic rules. Here, $S$ is the only non-terminal and $\Sigma=\{0,1,2\}$ is a set of terminals. $\text{S.val}$ denotes the synthesized attribute (a ... $3$ value. The value computed by the translation scheme for the input string $201$ is $20.$

Consider the syntax-directed translation given by the following grammar and semantic rules. Here, $S$ is the only non-terminal and $\Sigma=\{0,1,2\}$ is a set of terminal...

GO Classes

521 views

GO Classes asked Jan 28

4 votes

1 answer

19

GO Classes Test Series 2024 | Mock GATE | Test 13 | Question: 39
Consider the following grammar $ \begin{aligned} & A \rightarrow B B \\ & B \rightarrow b \end{aligned} $ Suppose we draw an $\operatorname{LR}(0)$ automatan for the given grammar then which of the ... transitions There is exactly one state with $2$ incoming transitions There is exactly one state with $3$ outgoing transitions

Consider the following grammar$$\begin{aligned}& A \rightarrow B B \\& B \rightarrow b\end{aligned}$$Suppose we draw an $\operatorname{LR}(0)$ automatan for the given gra...

GO Classes

376 views

GO Classes asked Jan 28

0 votes

0 answers

20

is there something wrong in the production rules?

pcla

92 views

pcla asked Jan 27

5 votes

1 answer

21

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 2
Consider the following grammar- ... $\text{Follow(T)}$ are same. $\operatorname{First}(\mathrm{A})$ and $\operatorname{First}(\mathrm{T})$ are same.

Consider the following grammar-$$\begin{aligned}& S \rightarrow b T \\& T \rightarrow A b \mid B a \\& A \rightarrow a S \mid C B \\& B \rightarrow b D \\& C \rightarrow ...

GO Classes

597 views

GO Classes asked Jan 21

4 votes

1 answer

22

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 16
Consider the following context-free grammar, with start symbol $S$ and terminals $a, ; , \lt , \gt .$ $ S \rightarrow \;\lt L \mid a \qquad L \rightarrow a R \mid \;\lt L R \quad R \rightarrow\;\gt\; \mid \;; L $ How many different parse trees are there for the string $\lt \lt a \gt ;a\gt ?$

Consider the following context-free grammar, with start symbol $S$ and terminals $a, ; , \lt , \gt .$$$S \rightarrow \;\lt L \mid a \qquad L \rightarrow a R \mid \;\lt L...

GO Classes

383 views

GO Classes asked Jan 21

2 votes

1 answer

23

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 33
Consider the following grammar: $ \begin{aligned} & S \rightarrow a S^{\prime} \\ & S^{\prime} \rightarrow b S^{\prime} \mid \epsilon \end{aligned} $ Which of the following is/are CORRECT right sentential form of the given grammar? $a b S^{\prime}$ $bS'$ $a S^{\prime} b$ $bbS$

Consider the following grammar:$$\begin{aligned}& S \rightarrow a S^{\prime} \\& S^{\prime} \rightarrow b S^{\prime} \mid \epsilon\end{aligned}$$Which of the following is...

GO Classes

478 views

GO Classes asked Jan 21

5 votes

1 answer

24

GO Classes Test Series 2024 | Mock GATE | Test 12 | Question: 34
$ \begin{aligned} & S \rightarrow S1 \;T \\ & S 1 \rightarrow a \mid(S S) \\ & T \rightarrow \varepsilon \mid b \;T \end{aligned} $ In the $\text{LL(1)}$ parser table, $M$ ... $\{T \rightarrow \varepsilon\}$ $\{S 1 \rightarrow a\}$ and $\{T \rightarrow \varepsilon\}$

$$\begin{aligned}& S \rightarrow S1 \;T \\& S 1 \rightarrow a \mid(S S) \\& T \rightarrow \varepsilon \mid b \;T\end{aligned}$$In the $\text{LL(1)}$ parser table, $M$, of...

GO Classes

454 views

GO Classes asked Jan 21

0 votes

1 answer

25

see Dragon Book 3.9, pp.173, pp . 179)
How to minimize a DFA ? How to convert RE to DFA directly?

How to minimize a DFA ?How to convert RE to DFA directly?

birtte

93 views

birtte asked Jan 15

0 votes

1 answer

26

Made easy mock test question from Compiler Design
Please show the procedure for the given question.

Please show the procedure for the given question.

Rohit Chakraborty

130 views

Rohit Chakraborty asked Jan 15

3 votes

1 answer

27

GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 26
A lexical analyzer uses the following patterns to recognize four tokens $\textsf{T1, T2, T3},$ and $\textsf{T4}$ over the alphabet $ \{a,b,c\}.$ Rule1: aa*b*c* { print ( T1 ); } Rule2: c { print ( T2 ); ... never be used? Note that the analyzer outputs the token that matches the longest possible prefix. Rule$1$ Rule$2$ Rule$3$ Rule$4$

A lexical analyzer uses the following patterns to recognize four tokens $\textsf{T1, T2, T3},$ and $\textsf{T4}$ over the alphabet $ \{a,b,c\}.$Rule1: aa*b*c* { print...

GO Classes

618 views

GO Classes asked Jan 13

3 votes

1 answer

28

GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 27
Suppose there is a handle on the top of the stack at some point in time while performing $\text{LR(k)}$ parsing. In this context, a cetrain $\text{LR(k)}$ parsers may exhibit uncertainty in ... The parser may perform reduction without generating any conflict. The parser may execute a shift operation without generating any conflict.

Suppose there is a handle on the top of the stack at some point in time while performing $\text{LR(k)}$ parsing. In this context, a cetrain $\text{LR(k)}$ parsers may exh...

GO Classes

527 views

GO Classes asked Jan 13

4 votes

1 answer

29

GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 54
Consider the following grammar given below. ... the last character of the string: $a^* b($ $\operatorname{CC}($ $\mathrm{BC}($ $\mathrm{CB}$ $\mathrm{BB}$

Consider the following grammar given below.$$\begin{aligned}& A \rightarrow B+A \\& A \rightarrow B \\& B \rightarrow C B \\& B \rightarrow C \\& C \rightarrow D^* \\& C ...

GO Classes

763 views

GO Classes asked Jan 13

0 votes

1 answer

30

Compiler-design
Q1. For the following grammar N -> AB | BA A -> a | CAC B -> b | CBC C -> a | b Find the FIRST and FOLLOW

Q1. For the following grammar N - AB | BA A - a | CAC B - b | CBC C - a | b Find the FIRST and FOLLOW

Ebrahim

167 views

Ebrahim asked Jan 12

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