Comment code to explain "how" but does not explain "why"?
<p>When I was in a programming study course, I alway had a bad situation: Comment code to explain "how" but does not explain "why".</p>

<p>What I want to know is why re-run the code there is and why you chose to write it.</p>

<p>What can I do to fix this problem to improve my programming?</p>
