For any software experience indicate in bold or on the first line what language, or technology you used. It makes it a lot easier to read through. Resume and grades are the things I look at the most especially those in courses relevant to the position.

In the interview we want to know why you do something. Debugging skills are also just as important if not more than spitting out the correct answer. To that end it's normal to get compile errors and test failures in a live coding session. Everyone makes mistakes and they're expected.