title: Why can we omit the first dimension of a multidimensional array when we are passing it to a function
body: <p>Why can we omit the first dimension of a multidimensional array when we are passing it to a function?</p>
  
  <p>In my programming class, we were told what when passing a multidimensional array to a function we can omit first dimension, for example, <code>a[10][15][20]</code> can be passed as <code>a[][15][20]</code>.</p>
  
  <p>Why?</p>