> For the complete documentation index, see [llms.txt](https://yar999.gitbook.io/gopl-zh/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yar999.gitbook.io/gopl-zh/ch2.md).

# 程序结构

Go语言和其他编程语言一样，一个大的程序是由很多小的基础构件组成的。变量保存值，简单的加法和减法运算被组合成较复杂的表达式。基础类型被聚合为数组或结构体等更复杂的数据结构。然后使用if和for之类的控制语句来组织和控制表达式的执行流程。然后多个语句被组织到一个个函数中，以便代码的隔离和复用。函数以源文件和包的方式被组织。

我们已经在前面章节的例子中看到了很多例子。在本章中，我们将深入讨论Go程序基础结构方面的一些细节。每个示例程序都是刻意写的简单，这样我们可以减少复杂的算法或数据结构等不相关的问题带来的干扰，从而可以专注于Go语言本身的学习。


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