1. 功能：

（1）C++源代码扫描程序识别C++记号。

C++语言包含了几种类型的记号：标识符，关键字，数（包括整数、浮点数），字符串、注释、特殊符号（分界符）和运算符号等。

（2）打开一个C++源文件，打印出所有以上的记号。

-1. Features: (1) C++ Source code scanner to identify C++ Mark. C++ Language contains several types of marks: identifier, keyword, several (including integer, floating point), strings, notes, special symbols (boundaries Fu) and symbols, such as computing. (2) to open a C++ Source file, print out all over the mark.