EBK CONCEPTS OF PROGRAMMING LANGUAGES
12th Edition
ISBN: 9780135102251
Author: Sebesta
Publisher: VST
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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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I need help creating the network diagram and then revising it for the modified activity times.
Activity No.
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Immediate Predecessors
1
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Data analysis
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Logical design
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c. Using the information from part b, prepare a network diagram. Identify the critical path.
Given the following Extended-BNF grammar of the basic mathematical expressions:
Show the derivation steps for the expression: ( 2 + 3 ) * 6 – 20 / ( 3 + 1 )
Draw the parsing tree of this expression.
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Chapter 3 Solutions
EBK CONCEPTS OF PROGRAMMING LANGUAGES
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...
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