打开输出文件,如果打开时出错，就输出"打不开"的信息

请输入一个准备存储到磁盘的字符串

接收从键盘输入的第一个字符

向磁盘文件输出一个字符

将输出的字符显示在屏幕上

　　 再接收从键盘输入的一个字符关闭文件 -Open the output file, if you open an error to output " not open"　message Please enter a string for storage into the disk to receive input from the keyboard the first character of a character to the disk file output to output characters are displayed on the screen to receive input from the keyboard of a character close the file