Comments by "Anony Mousse" (@anon_y_mousse) on "you need to stop using print debugging (do THIS instead)" video.

  1. It would also be helpful to demonstrate how to write test cases and how best to separate into multiple modules. Also, you should check the number only once when read in from the user as well as stop using magic numbers. Might also want to demonstrate using `gdb` even if your program isn't crashing.
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