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Karel the Robot: A Gentle Introduction to the Art of Programming

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Juli 1994

Beschreibung

Beschreibung

Karel the Robot teaches you the fundamental concepts and skills of programming - quickly and easily! By emphasizing logic and structure over calculation, it provides a nonthreatening introduction to the central ideas in programming - the same ideas that apply to all computer programming languages. This widely-praised guide begins by introducing KAREL, a literal-minded robot whose built-in capabilities allow him to explore his world and manipulate simple objects in it. It then introduces KAREL's programming language (a block-structured language similar to Pascal), which emphasizes logical deduction and spatial reasoning rather than calculation and algebraic reasoning. Once you learn the details of KAREL's deceptively simple programming language, you will soon be designing well-structured programs that instruct KAREL to perform surprisingly complex tasks. Along the way, you will be absorbing sophisticated programming concepts that will enhance your programming ability! A software simulator for KAREL's programming language and world is available on a wide variety of mainframes and microcomputers - details inside.

Inhaltsverzeichnis

Chapter 1. The Robot World 1 1.1. Karela s World 1 1.2. Karela 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 Karela 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
EAN: 9780471597254
ISBN: 0471597252
Untertitel: Sprache: Englisch.
Verlag: JOHN WILEY & SONS INC
Erscheinungsdatum: Juli 1994
Seitenanzahl: 176 Seiten
Format: kartoniert
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