Concepts of Programming Languages (11th Edition)
11th Edition
ISBN: 9780133943023
Author: Robert W. Sebesta
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 27RQ
Is left recursion a problem for LR parsers?
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recursion
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Using the syntax of C, write a recursive-descent subprogram named initializer that corresponds to the following rules (taken from the C99 standard):
initializer:
assignment-expression
{ initializer-list }
{ initializer-list，}
Note that { and } are terminals, not metasymbols. Assume that recursive-descent subprograms named assignment-expression and initializer-list already exist.
Chapter 4 Solutions
Concepts of Programming Languages (11th Edition)
Ch. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Prob. 4RQCh. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - Prob. 10RQ
Ch. 4 - Prob. 11RQCh. 4 - Prob. 12RQCh. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Prob. 15RQCh. 4 - Prob. 16RQCh. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - Prob. 19RQCh. 4 - Prob. 20RQCh. 4 - Prob. 21RQCh. 4 - Prob. 22RQCh. 4 - Prob. 23RQCh. 4 - What was Knuths insight in developing the LR...Ch. 4 - Prob. 25RQCh. 4 - Prob. 26RQCh. 4 - Is left recursion a problem for LR parsers?Ch. 4 - Prob. 1PSCh. 4 - Prob. 2PSCh. 4 - Prob. 3PSCh. 4 - Prob. 4PSCh. 4 - Prob. 7PSCh. 4 - Prob. 8PS
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- Indirect recursion is when function A calls function B, which in turn calls function A. is it true or false.arrow_forwardRecursive function that returns the minimum of the numbers in C PROGRAMMING LANGUAGE PLEASE AND COMMENT EVERY-LINE SO THAT I COULD UNDERSTAND WHAT IS HAPPENINGarrow_forwardRecursive Syntax The recursive structure i.e of natural language like English can be expressed in syntax rules written in the format known as BNF (Bachus-Naur Form). While BNF is ordinarily used as a guide for parsing (that is, determining whether and how a given string follows the syntax rules), An example of this can be found in the sample program SimpleRandomSentences. You should write a similar program that implements the following rules:<sentence> ::= <simple_sentence> [ <conjunction> <sentence> ]<simple_sentence> ::= <noun_phrase> <verb_phrase><noun_phrase> ::= <proper_noun> |<determiner> [ <adjective> ]. <common_noun> [ who <verb_phrase> ]<verb_phrase> ::= <intransitive_verb> |<transitive_verb> <noun_phrase> |is <adjective> |believes that <simple_sentence><conjunction> ::= and | or | but | because<proper_noun> ::= Fred | Jane | Richard Nixon | Miss…arrow_forward
- Write an EBNF rule that describes the for-statement of Java or C++. Write the recursive descent subprogram in Java or C++ for this rule.arrow_forwardWrite a recursive function definition in C that will calculate the sum of the first n odd integers (all odd interfere between 1 and 2n - 1)arrow_forwardProlog The sequence of Pell numbers 0,1,2,5,12,29,70,169,408,.. can be defined recursively as the sequence of numbers in which the first two numbers are 0 and 1, and each subsequent number is given by adding 2 times the preceding number to the number which precedes this. This can be defined in Haskell as: pell :: Int -> Int pell 0 = 0 pell 1 = 1 pell n = 2 * pell (n-1) + pell (n-2) Formulate the appropriate Prolog predicate "pell(N,Pn)" which is true if (and only if) "Pn" is the "N"-th term of the sequence of Pell numbers (note that we start numbering the sequence of Pell numbers with 0). That is, "pell(8,408)." would evaluate to "true", or "pell(5,Pn)." would give "Pn = 29"arrow_forward
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