How to format our code for Code Coaches challenges?

Question

I am trying to do the Pig Latin challenge (that's also the first one that I am attempting). What is not clear to me is how do I format my code. I mean the way I am trying to solve it is that I am writing a function that would take an input and give and output. But this format does not run as I am intending.
In other words, how can I write my solution so that it takes in the input provided by the test cases, and also in what specific format should I be returning the output.

Answer 1

Thanks ~ swim ~
Can you tell that whether we can import an external language library to solve the challenge?