1
GATE CSE 2024 Set 1
MCQ (More than One Correct Answer)
+1
-0.33

Which of the following is/are Bottom-Up Parser(s)?

A

Shift-reduce Parser

B

Predictive Parser

C

LL(1) Parser

D

LR Parser

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

Consider the following syntax-directed definition (SDD).

S → DHTU { S.val = D.val + H.val + T.val + U.val; }
D → “M” D1 { D.val = 5 + D1.val; }
D → ε { D.val = –5; }
H → “L” H1 { H.val = 5 * 10 + H1.val; }
H → ε { H.val = –10; }
T → “C” T1 { T.val = 5 * 100 + T1.val; }
T → ε { T.val = –5; }
U → “K” { U.val = 5; }
Given “MMLK” as the input, which one of the following options is the CORRECT value computed by the SDD (in the attribute S.val)?
A

45

B

50

C

55

D

65

3
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) $R \rightarrow c R$

4
GATE CSE 2024 Set 1
MCQ (Single Correct Answer)
+2
-0.66

Consider the following pseudo-code.

L1: t1 = -1
L2: t2 = 0
L3: t3 = 0
L4: t4 = 4 * t3
L5: t5 = 4 * t2
L6: t6 = t5 * M
L7: t7 = t4 + t6
L8: t8 = a[t7]
L9: if t8 <= max goto L11
L10: t1 = t8
L11: t3 = t3 + 1
L12: if t3 < M goto L4
L13: t2 = t2 + 1
L14: if t2 < N goto L3
L15: max = t1

Which one of the following options CORRECTLY specifies the number of basic blocks and the number of instructions in the largest basic block, respectively ?

A

6 and 6

B

6 and 7

C

7 and 7

D

7 and 6

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