Teach Yourself C in 24 Hours (2nd ed.) [Zhang 2000-02-28].pdf

Teach Yourself

in 24

Hours

Tony Zhang

SECOND EDITION

201 West 103rd St., Indianapolis, Indiana, 46290 USA

Sams Teach Yourself C in 24 Hours,

Second Edition

retrieval system, or transmitted by any means, electronic, mechanical, photo-

copying, recording, or otherwise, without written permission from the pub-

lisher. No patent liability is assumed with respect to the use of the information

contained herein. Although every precaution has been taken in the preparation

of this book, the publisher and author assume no responsibility for errors or

omissions. Nor is any liability assumed for damages resulting from the use of

the information contained herein.

A SSOCIATE P UBLISHER

Michael Stephens

A CQUISITIONS E DITOR

Carol Ackerman

D EVELOPMENT E DITOR

Gus A. Miklos

M ANAGING E DITOR

Charlotte Clapp

P ROJECT E DITOR

Andy Beaster

C OPY E DITOR

Kate Givens

I NDEXERS

Christine Nelsen

Deborah Hittel

P ROOFREADER

Candice Hightower

T ECHNICAL E DITOR

Bill Mitchell

T EAM C OORDINATOR

Pamalee Nelson

I NTERIOR D ESIGNER

Gary Adair

C OVER D ESIGNER

Aren Howell

C OPYWRITER

Eric Borgert

E DITORIAL A SSISTANT

Angela Boley

P RODUCTION

Stacey DeRome

Mark Walchle

International Standard Book Number: 0-672-31861-x

Library of Congress Catalog Card Number: 99-067311

Printed in the United States of America

First Printing: February, 2000

05 04 03

6 5 4 3

Trademarks

All terms mentioned in this book that are known to be trademarks or service

marks have been appropriately capitalized. Sams Publishing cannot attest to the

accuracy of this information. Use of a term in this book should not be regarded

as affecting the validity of any trademark or service mark.

Warning and Disclaimer

Every effort has been made to make this book as complete and as accurate as

possible, but no warranty or fitness is implied. The information provided is on

an “as is” basis. The author and the publisher shall have neither liability nor

responsibility to any person or entity with respect to any loss or damages aris-

ing from the information contained in this book.

Contents at a Glance

Introduction

Part I The Basics of C

Hour 1

Taking the First Step

Writing Your First C Program

Learning the Structure of a C Program

Understanding Data Types and Keywords

Handling Standard Input and Output

Part II Operators and Control-flow Statements

Hour 6

Manipulating Data

Working with Loops

105

Using Conditional Operators

121

Working with Data Modifiers and Math Functions

141

Controlling Program Flow

155

Part III Pointers and Arrays

173

Hour 11

Understanding Pointers

175

Understanding Arrays

189

Manipulating Strings

207

Understanding Scope and Storage Classes

223

Part IV Functions and Dynamic Memory Allocation

241

Hour 15

Working with Functions

243

Applying Pointers

259

Allocating Memory

279

Using Special Data Types and Functions

295

Part V Structure, Union, File I/O, and More

311

Hour 19

Understanding Structures

313

Understanding Unions

333

Reading and Writing with Files

355

Using Special File Functions

373

Compiling Programs: The C Preprocessor

391

Where Do You Go from Here?

409

Part VI Appendixes

437

Appendix A

ANSI Standard Header Files

439

Answers to Quiz Questions and Exercises

441

Index

503

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