Concepts of Programming Languages (11th Edition)
11th Edition
ISBN: 9780133943023
Author: Robert W. Sebesta
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 23PS
Compute the weakest precondition for each of the following assignment statements and postconditions:
- a. a = 2 * (b - 1) - 1 {a > 0}
- b. b = (c + 10) / 3 {b > 6)
- c. a = a + 2 * b - 1{a > 1}
- d. x = 2 * y + x - 1 {x > 11}
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Compute the weakest precondition for each of the following assignment statements and postconditions. x = 2 * y -5; y = x + 2; {y < 2}
For the following, compute the weakest precondition for the following assignment statement given the postcondition.
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Compute the weakest precondition for each of the following assignment statements and selection constructs. Detailed steps are needed.
a = 2 * (b - 1) - 1 {a > 0}
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if (a == b)
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{b > 1}
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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