Karel The Robot: A Gentle Introduction to the Art of Programming / Edition 2

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Overview

Uses a creative approach to teach the basic skills and concepts of programming quickly. This edition offers excellent insights into problem solving and program design processes. It will also improve comprehension of such computer science considerations as loop invariants and recursion. Includes 60 color line drawings.

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Editorial Reviews

Library Journal
Since 1981, Karel the Robot has been instructing students in the delicate practice of programming. With all sorts of new ways to teach programming, is the Karel method still valid? As long as introductory programming is about learning to think, there's room for Karel and his universe. You learn in the beginning about Karel's world and how to move him around ever so carefully in his streets and avenues. From these simple steps, you learn how to improve Karel's programming vocabulary so that you can do more with less code. You then advance to conditional statements and more complicated repeating instructions, ending up with skills such as ordering your robot to search his space for objects. Karel proves that a lot of programming expertise can be taught with a few well-chosen exercises and an emphasis on logical thinking and clean programming. Let's hope Karel the Robot never ends up on the junk heap.
Booknews
This small text teaches the fundamental concepts and skills of programming by emphasizing logic and structure over calculation. Using KAREL, a simple but instructive programming language, the author guides the reading into the programming world in a gentle and conceptual way. Annotation c. Book News, Inc., Portland, OR (booknews.com)
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Product Details

  • ISBN-13: 9780471597254
  • Publisher: Wiley
  • Publication date: 7/25/1994
  • Edition description: New Edition
  • Edition number: 2
  • Pages: 176
  • Product dimensions: 6.00 (w) x 9.00 (h) x 0.41 (d)

Table of Contents

Chapter 1. The Robot World 1

1.1. Karel's World 1

1.2. Karel's Capabilities 3

1.3. Tasks and Situations 4

1.4. Problem Set 6

Chapter 2. Primitive Instructions and Simple Programs 7

2.1. Changing Position 7

2.2. Handling Beepers 9

2.3. Finishing a Task 9

2.4. A Complete Program 10

2.5. Error Shutoffs 13

2.6. Programming Errors 14

2.7. Problem Set 19

Chapter 3. Extending Karel's Vocabulary 25

3.1. Creating a More Natural Programming Language 25

3.2. A Mechanism That Defines New Instructions 26

3.3. Block Structuring 27

3.4. The Meaning and Correctness of New Instructions 28

3.5. Defining New Instructions in a Program 29

3.6. Boxing: How Karel Understands a Program 32

3.7. An Ungrammatical Program 34

3.8. Tools for Designing and Writing Karel Programs 35

3.9. Advantages of Using New Instructions 53

3.10. Writing Understandable Programs 57

3.11. Problem Set 59

Chapter 4. Conditionally Executing Instructions 65

4.1. The IF/THEN Instruction 65

4.2. The Conditions Karel Can Test 66

4.3. Simple Examples of the IF/THEN Instruction 67

4.4. The IF/THEN/ELSE Instruction 74

4.5. Nested IF Instructions 76

4.6. More Complex Tests 79

4.7. When to Use an IF Instruction 80

4.8. Transformations for Simplifying IF Instructions 81

4.9. The Dangling ELSE 84

4.10. Problem Set 87

Chapter 5. Instructions That Repeat 93

5.1. The ITERATE Instruction 93

5.2. The WHILE Instruction 95

5.3. Errors to Avoid with WHILE Loops 100

5.4. Nested WHILE Loops 104

5.5. WHILE and IF Instructions 112

5.6. Reasoning About Loops 112

5.7. A Large Program Written by Stepwise Refinement 116

5.8. When to Use a Repeating Instruction 126

5.9. Problem Set 128

Chapter 6. Advanced Techniques for Karel 141

6.1. Recursion 141

6.2. Searching 145

6.3. Doing Arithmetic 149

6.4. Problem Set 152

Appendix 155

Technical Term Index 157

Instruction Index 159

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