1
GATE CSE 2024 Set 2
Numerical
+2
-0.66

Consider the following augmented grammar, which is to be parsed with a SLR parser. The set of terminals is $\{ a, b, c, d, \, \#, \, @ \}$

$S' \rightarrow S$
$S \rightarrow SS \;|\; Aa \;|\; bAc \;|\; Bc \;|\; bBa$
$A \rightarrow d\#\#$
$B \rightarrow @$

Let $I_0 = \text{CLOSURE}( \{ S' \rightarrow \bullet S \} )$. The number of items in the set $GOTO(I_0, \, S)$ is __________.

Your input ____
2
GATE CSE 2024 Set 1
MCQ (Single Correct Answer)
+2
-0.66

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

$$S \rightarrow d a T \mid \underline{\ (1)}$$

$$T \rightarrow a S \mid b T \mid \ \underline{(2)}$$

$$R \rightarrow \underline{(3)} \mid \epsilon$$

The set of terminals is $\{a, b, c, d, f\}$. The FIRST and FOLLOW sets of the different non-terminals are as follows.

FIRST($S$) = $\{c, d, f\}$, FIRST($T$) = $\{a, b, \epsilon\}$, FIRST($R$) = $\{c, \epsilon\}$

FOLLOW($S$) = FOLLOW($T$) = $\{c, f, \#\}$, FOLLOW($R$) = $\{f\}$

Which one of the following options CORRECTLY fills in the incomplete productions?

A

(1) $S \rightarrow R f$ (2) $T \rightarrow \epsilon$ (3) $R \rightarrow c T R$

B

(1) $S \rightarrow f R$ (2) $T \rightarrow \epsilon$ (3) $R \rightarrow c T R$

C

(1) $S \rightarrow f R$ (2) $T \rightarrow c T$ (3) $R \rightarrow c R$

D

(1) $S \rightarrow R f$ (2) $T \rightarrow c T$ (3) $R \rightarrow c R$

3
GATE CSE 2021 Set 2
Numerical
+2
-0

Consider the following augmented grammar with {#, @, <, >, a, b, c} as the set of terminals.

S' → S

S → S # cS

S → SS

S → S @

S → < S >

S → a

S → b

S → c

Let I0 = CLOSURE({S' → ∙ S}). The number of items in the set GOTO(GOTO(I0, <), <) is _______

Your input ____
4
GATE CSE 2021 Set 1
MCQ (Single Correct Answer)
+2
-0.67

Consider the following context-free grammar where the set of terminals is {a, b, c, d, f}.

S → d a T | R f

T → a S | b a T | ϵ

R → c a T R | ϵ

The following is a partially-filled LL(1) parsing table.

GATE CSE 2021 Set 1 Compiler Design - Parsing Question 10 English

Which one of the following choices represents the correct combination for the numbered cells in the parsing table ("blank" denotes that the corresponding cell is empty)?

A
(1) S → R f (2) S → R f (3) T → ϵ (4) T → ϵ
B
(1) blank (2) S → R f (3) blank (4) blank
C
(1) S → R f (2) blank (3) blank (4) T → ϵ
D
(1) blank (2) S → R f (3) T → ϵ (4) T → ϵ
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