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Trace Every Line of Code When Written
Why are there Bugs in Software?
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Trace Every Line of Code When Written
As each line of code is about to be executed, you should try to predict what the effect will be -- what data will be changed, which path a conditional will follow, etc. If you can't predict what the effect will be, then you don't understand the program you are working on -- a very dangerous situation. If you don't predict correctly, you have probably discovered a problem that should be addressed.
Tracing all new code shows:
Code that hasn't been tested. By stepping through each line of code, you ensure that the new code is fully tested.
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Other Interview Questions
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