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GATE CS 2024 Set 1 — Question 37

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MCQ+2 / -0.67MediumSyntax-Directed TranslationSemantic AnalysisCompiler Design

Compiler Design → Semantic Analysis → Syntax-Directed Translation

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Question

Consider the following syntax-directed definition (SDD).
ProductionSemantic Rules
S → DHTU{S.val=D.val+H.val+T.val+U.val;}\{ S.val = D.val + H.val + T.val + U.val; \}
D→"M"D1D \to \text{"M"}D_1{D.val=5+D1.val;}\{ D.val = 5 + D_1.val; \}
D→ϵD \to \epsilon{D.val=−5;}\{ D.val = -5; \}
H→"L"H1H \to \text{"L"}H_1{H.val=5∗10+H1.val;}\{ H.val = 5 * 10 + H_1.val; \}
H→ϵH \to \epsilon{H.val=−10;}\{ H.val = -10; \}
T→"C"T1T \to \text{"C"}T_1{T.val=5∗100+T1.val;}\{ T.val = 5 * 100 + T_1.val; \}
T→ϵT \to \epsilon{T.val=−5;}\{ T.val = -5; \}
U→"K"U \to \text{"K"}{U.val=5;}\{ 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.valS.val)?
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