Input to program without command-line arguments

Posted by Core Xii on Programmers See other posts from Programmers or by Core Xii
Published on 2012-03-19T13:16:29Z Indexed on 2012/03/19 18:13 UTC
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command-line

Let's assume that there are no command-line arguments. How do you pass input data to a program?

I'm thinking you'd write the input to a file with a specific name, such that the program knows to open and read it as input. However, how would one discover the name of that file? Usually, running a command-line program without arguments or with some standard help argument (e.g. \?) produces some instruction on how to use it. But given an environment with no command-line arguments, how does one discover how to operate a program?

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