title: Dont understand while loop syntax
body: <p>I need help with an input driven loop, meaning the user enters two values and the sum,difference,product,quotient and remainder are printed until user enters a zero for the second value. I don't understand how to write the while loop what variable am I testing</p>
  
  <p>Here's a sample:</p>
  
  <pre><code>enter two integers: 19 7
  sum of 19 and 7 is 26
  difference of 19 and 7 is 12 
  etc..
  </code></pre>