文件操作功能。1）将同一目录或者是指定路径的txt文件的内容拷贝一份 -File manipulation functions. 1) will be in the same directory, or specify the path to a copy of the contents of the txt file, etc.

编写程序并调试：从程序中读入一篇英语文章(如englishfile.txt)，并作一些词汇统计（用类封装成员函数）-Programming and debugging: from the program read an English article (such as englishfile.txt), and to make a number of statistical terms (using the class encapsulates a member function)

一个简单的文件批量操作小程序，可以实现批量的移动、复制、删除-A simple batch file operation procedures for small, mobile, can realize batch copy, delete