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说明：  第一次上传东西里面是一个udf文件边界条件设置(From inside the first thing is to set the boundary conditions of a udf file)

首先通过文件操作，读取文件内容，把字符逐个提取后统计字符频率，建立哈夫曼树和进行哈夫曼编码，当然这是根据ASCII编码来将字符转换为二进制，然后实现前缀编码，然后把编码后的使用二进制流写入相应文件(First through file operations, read the file content, the characters one by one after extracting character frequency statistics, establish a Huffman tree and Huffman encoding, and, of course, this is according to ASCII code to convert characters to the binary, then realize the prefix encoding, and then the encoded using binary stream into the corresponding files )

VC++逐行读取Txt文本文件，只是一个读写方式的不同，总之最终的目标是读取整个文件(VC++ read line by line Txt text file, just a different way of reading and writing, in short, the ultimate goal is to read the entire document)

将264文件的二进制码转换成文本文件，以便于264文件的调试显示。(264 files will be converted into binary code a text file in order to debug 264 documents show.)

读取excel文件的源代码，自己开发，功能详细！(read excel file source code!)

利用MFC对Excel文件进行路径显示，写入，读取，更改，保存等操作 (Using MFC to read the Excel file, write, change, save and other operations)

创建多级目录(The example of creating multilevel dir)

一个有关ＥＸＣＥＬ表打印的和读取的实现程序(an Excel table of the print and read the program to realize)

标准c的重要的头文件，便于在程序编写中查阅，很有帮助的(standards of the first important document, prepared to facilitate the inspection process, helpful)

说明：  方便的进行日志文件输出的类，可以添加在任何C++工程里面(convenient for the log file output types, can be added in any engineering inside)