Computer Science: An Overview: Global Edition (12th Edition)

Published by Pearson Higher Education
ISBN 10: 1292061162
ISBN 13: 978-1-29206-116-0

Chapter 12 - Theory of Computation - Chapter Review Problems - Page 569: 1

Answer

In Bare Bones, a simple programming language, we can simulate a structure similar to "while \( X \) equals 0" using its limited set of commands. Here's how we can achieve this: ```plaintext clear X incr X while X not 0 do decr X end ```

Work Step by Step

- `clear X`: Initializes the variable \( X \) to zero. - `incr X`: Increments the value of \( X \) by 1. - `while X not 0 do`: Starts a loop that continues as long as \( X \) is not equal to 0. - `decr X`: Decrements the value of \( X \) by 1 inside the loop. - `end`: Marks the end of the loop. This structure will keep decrementing the value of \( X \) until it reaches 0, effectively simulating the behavior of "while \( X \) equals 0".
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