题目:有两个磁盘文件A和B,各存放一行字母,要求把这两个文件中的信息合并(按字母顺序排列), 　　　输出到一个新文件C中.-Topic: A and B of the two disk files, each store one line letter, to merge the information in these two files (in alphabetical order), output to a new file C.