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How do I go about "starting the test"?
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Try out variations until you are convinced that they do what you want.
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at what point Val, should I start implementing the menu system?
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When you think you have completed your tests.
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Do you think you could give me the very first part of the menu so I implement the rest on the right track?
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Not yet.
I want you to build something
you can understand. When you have something working, we could check out together what improvements are left.
Try to approach the menu system as a independent project. Make it a "do-nohting" menu. A sort of a skeleton. And let's see the structure of it.
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think the only thing that might stump me now is the REFERENCE Function to integrate into this coding...
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Watch out with the word "reference function".
Anyway, we
do have a function that takes a reference as a parameter. I am not sure if you noticed it. Check out
total_cost(...).