从键盘输入若干行字符（每行长度不等），输入后把它们存储到一磁盘文件中。再从该文件中读入这些数据，将其中小写字母转换成大写字母后在显示屏上输出。-A number of lines from the keyboard input characters (one per line lengths), enter the store after them to a disk file. And then read from the file into the data, in which lowerc