title: Write the prototype for a function that takes an array of exactly 16 integers
body: <p>One of the interview questions asked me to "write the prototype for a C function that takes an array of exactly 16 integers" and I was wondering what it could be?  Maybe a function declaration like this:</p>
  
  <pre><code>void foo(int a[], int len);
  </code></pre>
  
  <p>Or something else?</p>
  
  <p>And what about if the language was C++ instead?</p>