That&#x27;s what the homework is for. But for new students who have never written code or experienced even a <i>prompt</i> (the closest thing to that now is the web browser address bar, which stops being a prompt as soon as you click to bring focus to it) -- it&#x27;s helpful to confirm for themselves that a code snippet works as described, from the typing of the first character to the actual execution.<p>Too often, beginners (and frankly, experienced programmers such as myself) believe that they truly understand a snippet of code just because they read it. And being beginners, they lack the discipline and the wisdom to know that code is not just human-readable machine instructions, to be read as if it were a stilted essay, but something to be interactively tested and changed.<p>Also, those new to coding don&#x27;t realize that <i>copying</i>&#x2F;reusing code is just fine. But understanding what it does before you attempt to re-use it -- that&#x27;s the challenge.