title: Access array element by a[0] Or 0[a], what is the practical usage?
body: <p><strong>What I know?</strong></p>
  
  <p>There is an array, <code>int a[10]</code>, and to access first element of it, I can either use <code>a[0]</code> or <code>0[a]</code>; 
  which leads to</p>
  
  <pre><code>*(a+0) and *(0+a) -&gt; Both results in accessing first element of the array. 
  </code></pre>
  
  <p><strong>What I want to know?</strong></p>
  
  <p>I want to know whether are any cases where it is more practical to use 0[a] instead of a[0]?</p>