利用C语言编写一个微型命令解释程序，接受并解释以下命令：

⑴ dir 列当前目录

⑵ cop 文件1 文件2 拷贝文件

⑶ era文件名 删除文件

⑷ dis字符串 显示字符串

⑸ end 结束，退出

-Use C language to write a mini-command interpreter, receive and interpret the following command: ⑴ dir files listed in the current directory ⑵ cop file two copies of a file name of the file ⑶ era delete files ⑷ dis end of the string to display the string ⑸ end, exit