title: Multi-line DEFINE directives?
body: <p>I am not an expert, so go easy on me.  Are there any differences between these two code segments?</p>
  
  <pre><code>#define BIT3 (0x1
  &lt;
  &lt;
  3)
  static int a;
  </code></pre>
  
  <p>and</p>
  
  <pre><code>#define BIT3 (0x1 &lt;&lt; 3) static int a;
  </code></pre>
  
  <p>Also, is there a way to write the first in one line?  What is the point of this multi-line style?  Is the following code good?</p>
  
  <pre><code>#define BIT3 (0x1 &lt;&lt; 3)
  static int a;
  </code></pre>