Concepts of Programming Languages (11th Edition)
11th Edition
ISBN: 9780133943023
Author: Robert W. Sebesta
Publisher: PEARSON
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Expert Solution & Answer
Chapter 3, Problem 3PS
Explanation of Solution
The modified BNF in which the + operator has a precedence over * operator and + operator is right associative is as follows:
=
A | B | C
*
|
+
|
()
|
Consider the sentence A = B + C * A:
The derivation of this sentence using the above BNF is as follows:
=
A = *
A = *
A = *
A = * A
A = * A
A = + * A
A = + * A
A = + * A
A = + C * A
A = + C * A
A = B + C * A
Since, the * operator is earlier in the BNF, it has a lower precedence...
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GIVEN:
E -> T – T | T
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Define - AMAT.
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Chapter 3 Solutions
Concepts of Programming Languages (11th Edition)
Ch. 3 - Prob. 1RQCh. 3 - Prob. 2RQCh. 3 - Prob. 3RQCh. 3 - Prob. 4RQCh. 3 - Prob. 5RQCh. 3 - Prob. 6RQCh. 3 - Prob. 7RQCh. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - What is the difference between a synthesized and...
Ch. 3 - Prob. 11RQCh. 3 - Prob. 12RQCh. 3 - Prob. 13RQCh. 3 - Prob. 14RQCh. 3 - Prob. 15RQCh. 3 - Prob. 16RQCh. 3 - Prob. 17RQCh. 3 - Prob. 18RQCh. 3 - Prob. 19RQCh. 3 - Prob. 20RQCh. 3 - Prob. 21RQCh. 3 - What does partial correctness mean for a loop...Ch. 3 - Prob. 23RQCh. 3 - Prob. 24RQCh. 3 - Prob. 25RQCh. 3 - Prob. 26RQCh. 3 - Prob. 27RQCh. 3 - Prob. 28RQCh. 3 - Prob. 29RQCh. 3 - The two mathematical models for language...Ch. 3 - Write EBNF descriptions for the following: a. A...Ch. 3 - Prob. 3PSCh. 3 - Prob. 4PSCh. 3 - Prob. 5PSCh. 3 - Prob. 6PSCh. 3 - Prob. 9PSCh. 3 - Prob. 10PSCh. 3 - Prob. 12PSCh. 3 - Prob. 15PSCh. 3 - Prob. 16PSCh. 3 - Prob. 17PSCh. 3 - Prob. 18PSCh. 3 - Compute the weakest precondition for each of the...
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- Write a BNF grammar describing the syntax of BNF; i.e., define the syntax of BNF itself using BNF. Use a pair of single quotes to use meta symbols like | and -> as terminal symbols, e.g., '|' and '->'. You may assume that non-terminals such as <identifier> and <special-symbol> are already defined.arrow_forwardWrite a BNF description of the Boolean expressions of Java, including the three operators &&, ||, and ! and the relational expressions.arrow_forwardCould you kindly explain, in as few words as possible, what the relevance of operator precedence is?arrow_forward
- 3. Given the following BNF grammar: -> d c | cd -> a la -> b | b Use the top-down recursive descent method which we discussed in the class to implement a parser (i.e. tdrd.parser.py) in python3 for the above BNF grammar. The input data file name is given from the command line. You may assume that there is a space character between two terminals (e.g. a a adc b ) in the data file.arrow_forwardDefine the term " operator dereference " .arrow_forwardWrite a finite-difference representation for ??/??=0 and identify all variables (e.g., subscripts, superscripts, etc.) using, a. Explicit scheme. b. Implicit scheme.arrow_forward
- please typed not hand written Question: Write a BNF description of the precedence and associativity rules defined below. Assume the only operands are the names a,b,c,d, and e.arrow_forwardEven if CNF may be converted to DNF, why is it easier to satisfy Disjunctive Normal Form (DNF) than Conjunctive Normal Form (CNF) in run time?arrow_forwardIn Pig, it is important to draw attention to the difference that exists between the group operator and the Cogroup operator.arrow_forward
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