title: Compare unsigned char = 0x00 and signed char = '00'
body: <p>How do i compare the following:</p>
  
  <pre><code>unsigned char a = 0x00;
  char b = '0'; // signed char
  </code></pre>
  
  <p>how do i write a comparison/conversion that matches a and b?</p>
  
  <p>thanks!</p>