该程序实现对文件夹中的单文件的C或C++源文件进行两两相似度比较，给出相似度百分比，使用时，要求比较的文件以.c或.cpp或.cc为扩展名，并放在c:盘compare文件夹中。程序使用的算法为，快速公共子串算法，可以对2W字符长度的代码进行评判。可用于教学当中，检测同生编程作业独立完成情况。-The program realized a single file folder of C or C++ source files pairwise similarity comparison, the percentage similarity is given, use, require more of the documents. C or. Cpp or. Cc for the extension, and on the c: drive compare folder. The algorithm uses fast Common Substring algorithm can 2W to judge the character length of the code. Which can be used for teaching, testing program with the health situation of working independently.