Compiler Design Week 3 Nptel Assignment Answers
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Compiler Design Week 3 Nptel Assignment Answers (Jan-Apr 2025)
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1. Which of the following is a lexical analysis tool
a) Lex
b) Flex
c) Iflex
d) All of the other options
2. In a lex specification file “?” stands for
a) 0 or more occurrences of preceding regular expression
b) One or more occurrences of preceding regular expression
c) Exactly one occurrences of preceding regular expression
d) None of the other options
3. Between NFA and DFA which an has the potential to have more states in it
a) DFA
b) NFA
c) Cannot be said deterministically
d) Both of same number of sets
4. Which of the following has more expressive power
a) DFA
b) NFA
c) Regular expression
d) All of the mentioned
5. Lex specification file sections are demarcated by
a) %
b) {%
c) %}
d) %%
6. e-closure of a state includes
a) All states reachable from it by & transitions only
b) All states reachable from it by single & transitions only
c) All states from which this state can be reached using & transitions
d) All states from which this state can be reached using & transitions and all states
reachable from it by & transitions only
7.
View Answer
8. Output of lex program is available in a file named
a) Lex.e
b) Lex.yy.c
c) Lex.l’
d) Lex.yy.l
9.
View Answer
10. Number of sections in a lex program is
a) 1
b) 2
c) 3
d) 4
Compiler Design Week 3 Nptel Assignment Answers (Jan-Apr 2025)
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