设有进程A、B、C，分别调用过程get、copy、put对缓冲区S和T进行操作。其中get负责从文件F_in中把数据块读入并输出缓冲区S，copy负责从S中提取数据块并复制到缓冲区T中，put负责从缓冲区T中取出信息存入到本地文件F_out中。实现get、copy、put的操作过程。-A process A, B, C, respectively, calling procedure get, copy, put the buffer S and T to operate. Which get in charge of the data from the file F_in block read and output buffer S, copy responsible for extracting data from the S block and copied into a buffer in T, put T is responsible for removing information from the buffer to the local file stored in F_out . Achieve get, copy, put the operation.