code class="code">l</code>, <code class="code"><span class="constructor">L</span></code>, or <code class="code"><span class="constructor">N</span></code>: convert an integer argument to
     unsigned decimal.  Warning: <code class="code">n</code>, <code class="code">l</code>, <code class="code"><span class="constructor">L</span></code>, and <code class="code"><span class="constructor">N</span></code> are
     used for <code class="code">scanf</code>, and should not be used for <code class="code">printf</cod