title: Split an NSString into an array in Objective-C
body: <p>How can I split the string <code>@"Hello"</code> to either:</p>
  
  <ul>
  <li>a C array of <code>'H'</code>, <code>'e'</code>, <code>'l'</code>, <code>'l'</code>, <code>'o'</code></li>
  </ul>
  
  <p>or:</p>
  
  <ul>
  <li>an Objective-C array of <code>@[@"H", @"e", @"l", @"l", @"o"]</code></li>
  </ul>