We check whether the minimum number (three) of command line arguments has been passed. These three args are.

我们检查是否传递了最小数目(三)的命令行参数。

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The "args" function takes care of making sure that we receive the correct number of command-line arguments, and also handles printing helpful usage information.

args “函数负责确保我们接收到正确数量的命令行自变量，它还负责打印有帮助的用法信息。”

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To parse the command-line options first, you just call the args method.

首先是解析命令行选项，只需调用args方法即可。

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To parse the command-line options first, you just call the args method.

首先是解析命令行选项，只需调用args方法即可。

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