本人软件设计作业，字符串操作 能够从磁盘上选择打开文本文档，读入所有内容并显示，统计所有的字符数目，单词数目，中文字符串的数目。 -I software design job, string manipulation can choose to open a text document from the disk, all reads and displays statistics the number of characters, number of words, the number