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Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.
E → number E.val = number. val
| E '+' E E(1).val = E(2).val + E(3).val
| E '×' E E(1).val = E(2).val × E(3).val
 
Q. Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?
  • a)
    Equal precedence and left associativity; ex­pression is evaluated to 7
  • b)
    Equal precedence and right associativity; ex­pression is evaluated to 9
  • c)
    Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7
  • d)
    Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Consider the following expression grammar. The seman­tic rules fo...
Answer is B as the productions belong to the same non-terminal and since YACC resolves by shift over reduce, the associativity will be right associative.
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Most Upvoted Answer
Consider the following expression grammar. The seman­tic rules fo...
Explanation:

Precedence and Associativity Properties:
- The LALR(1) parser generated for parsing arithmetic expressions with the given grammar realizes equal precedence and right associativity.
- This means that the multiplication operator (×) and addition operator (+) have equal precedence, but the parser associates operators of the same precedence from right to left.

Evaluation of the Expression 3 × 2 + 1:
- When the expression 3 × 2 + 1 is parsed by the LALR(1) parser, it first evaluates the multiplication operation to get 6.
- Then, it performs the addition operation on the result of the multiplication, resulting in the final evaluation of 6 + 1 = 7.
Therefore, the generated parser realizes equal precedence and right associativity, and the expression 3 × 2 + 1 is correctly evaluated to 7.
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Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. Can you explain this answer?
Question Description
Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. 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 Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. 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 Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. Can you explain this answer?.
Solutions for Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. 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 Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Consider the following expression grammar. The seman­tic rules for expression calculation are stated next to each grammar production.E → number E.val = number. val| E '+' E E(1).val = E(2).val + E(3).val| E '×' E E(1).val = E(2).val × E(3).valQ.Assume the conflicts in Part (a) of this question are resolved and an LALR(1) parser is generated for parsing arithmetic expressions as per the given grammar. Consider an expression 3 × 2 + 1. What precedence and associativity properties does the generated parser realize?a)Equal precedence and left associativity; ex­pression is evaluated to 7b)Equal precedence and right associativity; ex­pression is evaluated to 9c)Precedence of '×' is higher than that of '+', and both operators are left associative; expression is evaluated to 7d)Precedence of '+' is higher than that of '×', and both operators are left associative; expression is evaluated to 9Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.
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