3.gif" width="630" height="552">


<a name="crunching"></a><h3>4. "Crunching the Numbers"</h3>

<p>The next step is to actually perform the calculation when the user taps on the
"Add!" button. Double-click on the button to bring up the code window for that action.</p>

<p>The only variable we need to declare here will be the answer, as the numbers used
will be directly read from the text field inputs.</p>

<p>In order to deal with the inputs properly, they need to be evaluated as numbers and not
