Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > When there is a reduce/reduce conflict?a)If a...
Start Learning for Free
When there is a reduce/reduce conflict?
- a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.
- b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.
- c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.
- d)None of the mentioned
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
When there is a reduce/reduce conflict?a)If a state does not know whet...
It occurs when If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.
View all questions of this test
Most Upvoted Answer
When there is a reduce/reduce conflict?a)If a state does not know whet...
Reduce/Reduce Conflict:
A reduce/reduce conflict occurs in a parser when the parser generator encounters a state where it has two or more possible reductions for the same lookahead symbol. This means that the parser cannot determine which production rule to apply, leading to ambiguity and potential parsing errors.
Explanation:
In a shift/reduce parser, the parser generator constructs a parsing table that determines the next action to take based on the current state and the lookahead symbol. The actions can be either a shift operation (moving to the next state) or a reduce operation (applying a production rule).
A reduce/reduce conflict specifically occurs when the parser encounters a state where it has two or more possible reductions for the same lookahead symbol. This means that there are multiple production rules that can be applied, leading to ambiguity in the parsing process.
Example:
Consider the following grammar:
1. S -> A
2. S -> B
3. A -> a
4. B -> a
Suppose we have the input symbol 'a'. At a certain state, the parser may have two possible reductions:
1. Reduce using production rule 3: A -> a
2. Reduce using production rule 4: B -> a
Since both reduction options are valid, the parser cannot determine which production rule to apply. This leads to a reduce/reduce conflict.
Resolution:
To resolve reduce/reduce conflicts, the grammar needs to be modified to remove the ambiguity. This can be done by either restructuring the grammar or introducing additional symbols to disambiguate the reductions.
In the example above, the grammar can be modified as follows to remove the reduce/reduce conflict:
1. S -> A
2. A -> a
3. B -> a
By removing the redundant production rule for B, the reduce/reduce conflict is resolved.
Conclusion:
A reduce/reduce conflict occurs when the parser encounters a state with multiple possible reductions for the same lookahead symbol. This leads to ambiguity in the parsing process and requires modifications to the grammar to remove the conflict.
A reduce/reduce conflict occurs in a parser when the parser generator encounters a state where it has two or more possible reductions for the same lookahead symbol. This means that the parser cannot determine which production rule to apply, leading to ambiguity and potential parsing errors.
Explanation:
In a shift/reduce parser, the parser generator constructs a parsing table that determines the next action to take based on the current state and the lookahead symbol. The actions can be either a shift operation (moving to the next state) or a reduce operation (applying a production rule).
A reduce/reduce conflict specifically occurs when the parser encounters a state where it has two or more possible reductions for the same lookahead symbol. This means that there are multiple production rules that can be applied, leading to ambiguity in the parsing process.
Example:
Consider the following grammar:
1. S -> A
2. S -> B
3. A -> a
4. B -> a
Suppose we have the input symbol 'a'. At a certain state, the parser may have two possible reductions:
1. Reduce using production rule 3: A -> a
2. Reduce using production rule 4: B -> a
Since both reduction options are valid, the parser cannot determine which production rule to apply. This leads to a reduce/reduce conflict.
Resolution:
To resolve reduce/reduce conflicts, the grammar needs to be modified to remove the ambiguity. This can be done by either restructuring the grammar or introducing additional symbols to disambiguate the reductions.
In the example above, the grammar can be modified as follows to remove the reduce/reduce conflict:
1. S -> A
2. A -> a
3. B -> a
By removing the redundant production rule for B, the reduce/reduce conflict is resolved.
Conclusion:
A reduce/reduce conflict occurs when the parser encounters a state with multiple possible reductions for the same lookahead symbol. This leads to ambiguity in the parsing process and requires modifications to the grammar to remove the conflict.
Attention Computer Science Engineering (CSE) Students!
To make sure you are not studying endlessly, EduRev has designed Computer Science Engineering (CSE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Computer Science Engineering (CSE).
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Similar Computer Science Engineering (CSE) Doubts
Top Courses for Computer Science Engineering (CSE)View all
When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer?
Question Description
When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 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 When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer?.
When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 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 When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer?.
Solutions for When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE).
Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free.
Here you can find the meaning of When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice When there is a reduce/reduce conflict?a)If a state does not know whether it will make a shift operation using the production rule i or j for a terminal.b)If a state does not know whether it will make a shift or reduction operation using the production rule i or j for a terminal.c)If a state does not know whether it will make a reduction operation using the production rule i or j for a terminal.d)None of the mentionedCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
|
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup