title: lisp convert to string uppercase
body: <p>I would like to convert an atom to a string to check if the first letter is a capital letter but with Clisp the function string returns uppercase letters si I can't apply it to my atom.</p>
  
  <p>Example : </p>
  
  <pre><code>(setq a 'ljlkj)
  (upper-case-p (char (string a)  0))     ----&gt; returns T (and I want nil)
  </code></pre>
  
  <p>What I am doing wrong?</p>
  
  <p>Thanks you in advance!</p>