title: Finding a Specific Digit of a Number
body: <p>I'm trying to find the <code>n</code>th digit of an integer of an arbitrary length.  I was going to convert the integer to a string and use the character at index n...</p>
  
  <p><code>char Digit = itoa(Number).at(n);</code></p>
  
  <p>...But then I realized the <code>itoa</code> function isn't standard.  Is there any other way to do this?</p>