一个包含详细注释的扫描器C源代码。在程序语言中，语法包含了一个抽象的模型，所有格式良好的代码单元（即源文件）都必须匹配。-A detailed annotated C source code scanners. In programming languages, the syntax includes an abstract model, all well-formed code unit (ie source file) must match.