Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > For the grammar below, a partial LL(1) parsin...
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For the grammar below, a partial LL(1) parsing table is also presented along with the grammar. Entries that need to be filled are indicated as E1, E2, and E3. 
is the empty string, $ indicates end of input, and, | separates alternate right hand sides of productions.
is the empty string, $ indicates end of input, and, | separates alternate right hand sides of productions.
Q.
The appropriate entries for E1, E2, and E3 are
- a)
- b)
- c)
- d)
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
For the grammar below, a partial LL(1) parsing table is also presented...
As we need to find entries E1, E2 and E3 which are against Non terminals S and B, so we will deal with only those productions which have S and B on LHS. Here representing the parsing table as M[X , Y], where X represents rows( Non terminals) and Y represents columns(terminals).
Rule 1: if P --> Q is a production, for each terminal 't' in FIRST(Q) add P-->Q to M [ P , t ]
Rule 2 : if epsilon is in FIRST(Q), add P --> Q to M [P , f] for each f in FOLLOW(P).
Rule 2 : if epsilon is in FIRST(Q), add P --> Q to M [P , f] for each f in FOLLOW(P).
For the production rule S--> aAbB, it will be added to parsing table at the position M[ S , FIRST(aAbB)], Now FIRST(aAbB) = {a}, hence add S--> aAbB to M[S , a] which is E1. For the production rule S--> bAaB, it will be added to parsing table at the position M[ S , FIRST(bAaB)], Now FIRST(bAaB) = {b}, hence add S--> bAaB to M[ S , b] which is E2 For the production rule S--> epsilon , it will be added to parsing table at the position M[ S , FOLLOW(S)], Now FOLLOW(S) = {a , b , $}, hence add S --> epsilon to M[ S , a] and M[ S , b] which are again E1 and E2 respectively. For the production rule B --> S, it will be added to parsing table at the position M[ B , FIRST(S)], Now FIRST(S) also contains epsilon, hence add B --> S to M[ S , FOLLOW(B)], and FOLLOW(B) contains {$}, i.e. M[S , $] which is E3. epsilon corresponds to empty string.
Most Upvoted Answer
For the grammar below, a partial LL(1) parsing table is also presented...
First s = a,b. Follow s= follow a = a,b/follow b = a,b,$So if you construct LL1 you'll get optc and it is also shift- reduce conflict
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For the grammar below, a partial LL(1) parsing table is also presented along with the grammar. Entries that need to be filled are indicated as E1, E2, and E3.is the empty string, $ indicates end of input, and, | separates alternate right hand sides of productions.Q.The appropriate entries for E1, E2, and E3 area)b)c)d)Correct answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about For the grammar below, a partial LL(1) parsing table is also presented along with the grammar. Entries that need to be filled are indicated as E1, E2, and E3.is the empty string, $ indicates end of input, and, | separates alternate right hand sides of productions.Q.The appropriate entries for E1, E2, and E3 area)b)c)d)Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the grammar below, a partial LL(1) parsing table is also presented along with the grammar. Entries that need to be filled are indicated as E1, E2, and E3.is the empty string, $ indicates end of input, and, | separates alternate right hand sides of productions.Q.The appropriate entries for E1, E2, and E3 area)b)c)d)Correct answer is option 'C'. Can you explain this answer?.
For the grammar below, a partial LL(1) parsing table is also presented along with the grammar. Entries that need to be filled are indicated as E1, E2, and E3.is the empty string, $ indicates end of input, and, | separates alternate right hand sides of productions.Q.The appropriate entries for E1, E2, and E3 area)b)c)d)Correct answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2025 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about For the grammar below, a partial LL(1) parsing table is also presented along with the grammar. Entries that need to be filled are indicated as E1, E2, and E3.is the empty string, $ indicates end of input, and, | separates alternate right hand sides of productions.Q.The appropriate entries for E1, E2, and E3 area)b)c)d)Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the grammar below, a partial LL(1) parsing table is also presented along with the grammar. Entries that need to be filled are indicated as E1, E2, and E3.is the empty string, $ indicates end of input, and, | separates alternate right hand sides of productions.Q.The appropriate entries for E1, E2, and E3 area)b)c)d)Correct answer is option 'C'. Can you explain this answer?.
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