说明：  实现一个简单的文本编辑器，该编辑器从键盘依次读入成行的文本，并将文本内容及时写入文件中，文件名由命令行参数指定。如果输入“stop”，运行结束。，
(Realize a simple text editor, the editor followed by reading from the keyboard to place the text, and text written into the file a timely manner, the file name specified by the command-line parameters. If you enter )