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1. Answer as True or False. a. Parsers do not parse the whole code if some errors exist in the program. b. CFG is a helpful tool in describing the syntax of programming languages. c. Syntax analyzer takes the modified source code from language preprocessors that are written in the form of sentences. d. Syntax analyzer checks whether the parse tree constructed follows the rules of language.

1. Answer as True or False. a. Parsers do not parse the whole code if some errors exist in the program. b. CFG is a helpful tool in describing the syntax of programming languages. c. Syntax analyzer takes the modified source code from language preprocessors that are written in the form of sentences. d. Syntax analyzer checks whether the parse tree constructed follows the rules of language.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1. Answer as True or False. a. Parsers do not parse the whole code if some errors exist in the program. b. CFG is a helpful tool in describing the syntax of programming languages. c. Syntax analyzer takes the modified source code from language preprocessors that are written in the form of sentences. d. Syntax analyzer checks whether the parse tree constructed follows the rules of language. 2. In each case below, state what language is generated by the context free grammar (CFG) productions indicated. a. S→ aSa | bSb | A, A → aBb | bBa, В > аВa | bBb | a |b|^ b. S> as | aSbS |A c. S> as | bS [a d. S→ SS | bS |a 3. Give the definition of a CFG that generates the language of all strings over {0, 1} that contain 3 times as many 1's as 0's. 4. Give the definition of a CFG that generate the following languages. a. L= {w E {0, 1}* | w contains at least three 1s } b. L= {w E {0, 1}* | w = wR and |w| is even } c. L= {w € {0, 1}* | the length of w is odd and the middle symbol is 0} 5. Let us assume T = {0, 1, (, ), U, *, ¤, ^}. Give the definition of CFG that generates all regular expressions with alphabets {0, 1}.
Transcribed Image Text:1. Answer as True or False. a. Parsers do not parse the whole code if some errors exist in the program. b. CFG is a helpful tool in describing the syntax of programming languages. c. Syntax analyzer takes the modified source code from language preprocessors that are written in the form of sentences. d. Syntax analyzer checks whether the parse tree constructed follows the rules of language. 2. In each case below, state what language is generated by the context free grammar (CFG) productions indicated. a. S→ aSa | bSb | A, A → aBb | bBa, В > аВa | bBb | a |b|^ b. S> as | aSbS |A c. S> as | bS [a d. S→ SS | bS |a 3. Give the definition of a CFG that generates the language of all strings over {0, 1} that contain 3 times as many 1's as 0's. 4. Give the definition of a CFG that generate the following languages. a. L= {w E {0, 1}* | w contains at least three 1s } b. L= {w E {0, 1}* | w = wR and |w| is even } c. L= {w € {0, 1}* | the length of w is odd and the middle symbol is 0} 5. Let us assume T = {0, 1, (, ), U, *, ¤, ^}. Give the definition of CFG that generates all regular expressions with alphabets {0, 1}.
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