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A Tutorial on Pointers and Arrays in C

A TUTORIAL ON POINTERS AND ARRAYS IN C by Ted Jensen Version 1.1 (HTML version) July 1998 This material is hereby placed in the public domain Available in various formats via

Preface Introduction Chapter 1: What is a Pointer? Chapter 2: Pointer Types and Arrays. Chapter 3: Pointers and Strings Chapter 4: More on Strings Chapter 5: Pointers and Structures Chapter 6: More on Strings and Arrays of Strings Chapter 7: More on Multi-Dimensional Arrays Chapter 8: Pointers to Arrays Chapter 9: Pointers and Dynamic Allocation of Memory Chapter 10: Pointers to Functions

file:///E|/My%20eBooks/_ESSENTIALS_/A%20Tutorial%...orial%20on%20Pointers%20and%20Arrays%20in%20C.htm (1 of 2)3/18/2007 12:09:49 AM

A Tutorial on Pointers and Arrays in C


file:///E|/My%20eBooks/_ESSENTIALS_/A%20Tutorial%...orial%20on%20Pointers%20and%20Arrays%20in%20C.htm (2 of 2)3/18/2007 12:09:49 AM


This document is intended to introduce pointers to beginning programmers in the C programming language. Over several years of reading and contributing to various conferences on C including those on the FidoNet and UseNet, I have noted a large number of newcomers to C appear to have a difficult time in grasping the fundamentals of pointers. I therefore undertook the task of trying to explain them in plain language with lots of examples. The first version of this document was placed in the public domain, as is this one. It was picked up by Bob Stout who included it as a file called PTR-HELP.TXT in his widely distributed collection of SNIPPETS. Since that original 1995 release, I have added a significant amount of material and made some minor corrections in the original work. In this HTML version 1.1 I've made a number of minor changes to the wording as a result of comments emailed to me from around the world.

There are so many people who have unknowingly contributed to this work because of the questions they have posed in the FidoNet C Echo, or the UseNet Newsgroup comp.lang.c, or several other conferences in other networks, that it would be impossible to list them all. Special thanks go to Bob Stout who was kind enough to include the first version of this material in his SNIPPETS file.

About the Author:
Ted Jensen is a retired Electronics Engineer who worked as a hardware designer or manager of hardware designers in the field of magnetic recording. Programming has been a hobby of his off and on since 1968 when he learned how to keypunch cards for submission to be run on a mainframe. (The mainframe had 64K of magnetic core memory!).

Use of this Material:
Everything contained herein is hereby released to the Public Domain. Any person may copy or distribute this material in any manner they wish. The only thing I ask is that if this material is used as a teaching aid in a class, I would appreciate it if it were distributed in its entirety, i.e. including all chapters, the preface and the introduction. I would also appreciate it if, under such circumstances, the instructor of such a class would drop me a note at one of the addresses below informing me of this. I have written this with the hope that it will be useful to others and since I'm not asking any financial remuneration, the only way I know that I have at least partially reached that goal is via feedback from those who find this material useful. file:///E|/My%20eBooks/_ESSENTIALS_/A%20Tutorial%20on%20Pointers%20and%20Arrays%20in%20C/Preface.htm (1 of 2)3/18/2007 12:09:49 AM


By the way, you needn't be an instructor or teacher to contact me. I would appreciate a note from anyone who finds the material useful, or who has constructive criticism to offer. I'm also willing to answer questions submitted by email at the addresses shown below.

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