title: how to check for the "backspace" character in C
body: <p>I'd like to know how to check if a user types the "backspace" character.</p>
  
  <p>I'm using the <code>getch() function i.e. "key = getch()"</code> in my C program and i'd like to check when backspace is pressed.  the line:</p>
  
  <pre><code> if(key = '\b') { ....
  </code></pre>
  
  <p>doesn't work.</p>