源码要求为至少5个C或Java源码或其他好源码或编程学习资料，质量越高得到的下载个数越多(一般上传5个，可以下载200个)。 -Source comprises at least 5 C or Java source code or programming or other good source of learning materials, the higher the quality the more the number of downloads to get (usually post 5, you can download the 200).