title: Printing an array of u_chars
body: <p>I have an array of u_chars and I want to print it using printf. I don't know the size of the array:</p>
  
  <pre><code>u_char *ip_p;
  printf("%s", ip_p); // EXC_BAD_ACCESS D:&lt;
  </code></pre>
  
  <p>I want to print this. How can I do this?</p>