Q.1
14 Marks(a)
Compare and contrast compilers and interpreters.
(b)
Explain in detail LEX Specification.
(c)
Explain Phases of Compilers with suitable example.
Also asked in Summer 2026 Q1c, Winter 2025 Q1c, Summer 2025 Q1c
Gujarat Technological UniversitySummer 2024 examination
GTU 2170701 Compiler Design (CD) Summer 2024 Question Paper & PDF
B.E. · Computer Engineering · Semester 7 · Subject code 2170701
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
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12 of 25 questions on this paper were also asked in other years. 1 more is a type of question GTU sets again with new data. Each is marked below with the years it appeared.See all 28 repeated 2170701 questions, most asked first
Q.2
14 Marks(a)
Describe language denoted by the following regular expression :
i)0 (0|1)*0
ii)((ε|0)1*)*
(b)
Draw transition diagram for following tokens.
i)Relop
ii)Identifier
iii)Unsigned number
iv)Whitespace
Also asked in Summer 2025 Q1b
(c)
Write the two methods used in lexical analyzer for buffering the input.
Which technique is used for speeding up the lexical analyzer?
Also asked in Summer 2026 Q5b OR, Winter 2025 Q2c OR, Summer 2025 Q2a
OR
(c)
Construct nondeterministic finite automata for following regular expression using Thomson‟s Construction. Show the sequence of moves made by each in Processing the input string ababbab. (a|b)*
Also asked in Summer 2026 Q2c OR
Q.3
14 Marks(a)
Consider the grammarS->aSbS|bSaS|εi)Show that this grammar is ambiguous by constructing
two different leftmost derivations for the sentence abab.
ii)Construct the corresponding rightmost derivations for
abab.
iii)Construct the corresponding parse trees for abab.
(b)
Define: Left Recursive Grammar. Check Following grammar is leftrecursive or not, if yes, Remove left recursive from it.S→aBDhB→Bb|cD→EFE→g| εF→f| ε(c)
Construct CLR Parsing table for the following grammar.
S→CCC→cC|dOR
(a)
Explain following terms:
i)Ambiguous grammar
ii)Left-Factoring grammar
(c)
Explain operator precedence parsing method with example.
Also asked in Summer 2026 Q4c OR, Summer 2025 Q3c
Q.4
14 Marks(a)
Construct the dag for following arithmetic expression: a+a+(a+a+a)
(b)
Discuss synthesized and inherited attributes using a suitable grammar.
Also asked in Summer 2026 Q3b, Summer 2025 Q4b OR
(c)
For the input expression (4*7+1)*2, construct on annotated Parse treeaccording to the syntax directed definition of figure given below.Production Semantic RulesL->En Print(E.val)E->E1+T E.val:=E.val+T.valE->T E.val:=T.valT->T1 *F T.val:= T1.val * F.valT->(E) T.val:=E.valF->digit F.val:=digit.lexvalT->F T.val:=F.valOR
(b)
Explain performance for bottom up evaluation of an inherited attributes.
Q.5
14 Marks(a)
Explain activation record. How is task divided between calling & called program for stack updating?
Also asked in Winter 2025 Q4b, Summer 2025 Q5b
(c)
What is Intermediate form of the code? What are the advantages of it? What are generally used intermediate forms? Write three address code for following expression. (a+b)*(c+d)
OR
(a)
How symbol table differs from other data structures?
(c)
Explain various issues in design of code generator.
Also asked in Summer 2026 Q5c, Winter 2025 Q5c OR, Summer 2025 Q4c OR
More Compiler Design papers
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Other Semester 7 subjects
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About this paper
Official Gujarat Technological University (GTU) examination paper for Compiler Design (CD) (Summer 2024, B.E. · Computer Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.