Problem 5Consider the following grammar:A ::= z BzB ::= CB|xy y x|eC := DEEDD := x x | x B x| xx B | BxxE := y y|y By y y B| Byywhere x, y, and z are terminals for letters x, y, and z respectively. Define in English the language that thegrammar generates and explain why so

In English the language that gives grammar generated

Answered: Problem 5 Consider the following…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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What is the regular expression that denotes the language generated by the grammar G? GIS. AJ. (a.b), 5, P) where S ABABA, AAA
1. Use the algorithm described in class that takes a CFG and converts it into a CNF (Chomsky Normal Form) grammar that generates the same language as the original grammar, except possibly for the string A, to answer the following question. As part of your answer, you should say which variables are nullable, and you should give the appropriate grammar after each step of the algorithm. There are four steps. Give a CFG (context-free grammar) in CNF (Chomsky Normal Form) that generates the same language, except possibly for the string A, as the following grammar: SAB AB →bAa A → aaB bb
Can anyone give me some explanations please? Please answer all A, B and C Suppose that in some programming language numbers are restricted as follows: (a) a number may be signed or unsigned. (b) the value field consists of two nonempty parts, separated by a decimal point. (c) there is an optional exponent field. If present this field must contain the letter e, followed by a signed two-digit integer. Design a grammar for the such numbers in this programming language.
Chomsky Normal Form: Most useful grammars can be translated into a nor-mal form making answers to questions about the language more transparent.
For the implementation of several compilers, it is important to understand which requirement compilers should satisfy. Explain three requirements that compilers should satisfy. Left-most, right-most and mixed derivations are often used to generate context-free grammars. A context-free grammar G has the production rules: S  aSS S b Generate the word aababbb using left most derivation.
A lexical analyzer cannot be created for a language whose grammar: a. lacks pairwise disjointnessb. has left-recursionc. is ambiguousd. a and b onlye. b and c onlyf. and c onlyg. a, b, and ch. none of the above
Design a Context-free grammar for the following language. L= {0ʻ1°2?i : jis divisible by 3 and i, j> 0} (Make sure you write down the language before you give the grammar. It saves us a bit of time.)
For this exercise, we will work on a regular grammar to recognize a comment in a C++ or Java program. A comment starts with /* and ends with */ and anything else in between can be ignored. We won't consider the case of nested comments. Keep in mind that you can have any number of * characters at the beginning, at the end, and in between. • Write a regular grammar recognizing such comments. • Draw the finite state machine for this grammar. • Draw a table for this grammar such as the ones for table-driver scanners in the class notes and in the book.
This question is based on the following grammar: exp -> exp + term I term term> term factor I factor factor -> num var | ( exp) i. Explain why this grammar is not suitable for recursive descent parsing. Modify the grammar so that it is in a suitable form. ii. Show both the parse tree and the abstract syntax tree for: 3 + x + y*y * z
Q1: Explain the concepts of ambiguity of a grammar. Take an example of your choice and show that the grammar is ambiguous. Draw the parse tree as needed. Q2: Select three flow control statements from C-programming, or from any other programming of your choice, and explain how the relevant grammars are written.
1.Eliminate left recursion from the production rules that are given in below. E = E + T / T 2.Define context-free grammar. 3.Write down the characteristic of context-free grammar.
This question is about context-free grammars and parsing, and Turing machines (TM’s). Question 1) Consider the following context-free grammar G over the alphabet Σ = {a, b, c}: S → aSb | ε | acSba | abc Using any of the grammar transformation techniques we saw in this module, construct a CNFgrammar that generates the same language as the grammar G of Question 1.Make sure you include in your answer all individual steps that you followed. Please help me with this question :)

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Problem 5 Consider the following grammar: A := z Bz B :=CB|xyy x|e C:= DEED D:=xx|x B x | xx B|Bxx E ::= yy|y Byly y B| Byy where x, y, and z are terminals for letters x, y, and z respectively. Define in English the language that the grammar generates and explain why so.