苹果电脑公司（Apple Computer, Inc.）为用户提供了全套免费的Cocoa程序开发工具，这套工具

就是我们所说的Xcode。它随着Mac OS X一起发行，当然，你也可以在苹果公司的网站下载。

市面上已经有了许多关于为Mac微机编程的优秀读物，这些读物阅读的前提往往是要求你有一

定的编程经验。但本书并不要求这个前提。因为本书以介绍Objective-C语言的基础知识为内容，即

关于如何使用Xcode的基础知识。通过学习前五章，你将掌握如何在非图形界面下编写基本的代码。

之后的一些章节将教给你如何在图形界面（GUI）下开发简单的程序。当你读过了整本书，你就已

经可以再去阅读开头提到的那些相对高深的读物以提高自己。事实上，你非常有必要去读更多的书，

因为编程有很多东西要学习。不过现在请不要紧张，本书的内容十分简单。-Apple Computer Inc. (Apple Computer, Inc.) Provides users with a complete set of free Cocoa application development tools, the tool

Is what we call Xcode. It is with the Mac OS X with the release, of course, you can download on Apple s website.

Many on the market have an excellent program for the Mac computer books, these books are often asked to read the premise you have a

Set of programming experience. But the book does not require the premise. Because the book is to introduce the Objective-C language basics for the content, that is

On the basics of how to use Xcode. Through the study of the first five chapters, you will learn how to write in a non-graphical interface basic code.

After some of the chapters will teach you how graphic interface (GUI) developed under simple procedures. When you read the whole book, you had

You can go read that by the beginning of the relatively advanced reading materials to improve themselves. In fact, you are very necessary to read more boo