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Command line argument how to provide user Option

开发者 https://www.devze.com 2022-12-07 17:40 出处:网络
In the command line 开发者_如何学编程argument I need to give the user want to give AOr B if a user is not typing this two I will again print these two words only

In the command line 开发者_如何学编程argument I need to give the user want to give A Or B if a user is not typing this two I will again print these two words only How can I ask by using the CM argument?

Command line argument.

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