Edit line is an example program to edit aline in C. This is an fast algorithm.

实现双线程高效下载 线程A从网络中读取一个数据块，存储到内存的缓存中。 线程B从缓存中读取内容，存储到文件中。-mutilineload Aline read datablockfrominternet ,save to the buffer in RAM. Bline read context from buffer,then save to file.