title: Objective C ceil returns wrong value
body: <pre><code>NSLog(@"CEIL %f",ceil(2/3));
  </code></pre>
  
  <p>should return 1. However, it shows:</p>
  
  <pre><code>CEIL 0.000000
  </code></pre>
  
  <p>Why and how to fix that problem? I use <code>ceil([myNSArray count]/3)</code> and it returns 0 when array count is 2.</p>