title: Postfix Evaluation C
body: <p>I am having a great time trying to get this "calculator" type program to work.</p>
  
  <p>I enter an arithmetic expression that is converted to postfix notation. (no biggie, I got that working yesteryear)</p>
  
  <p>However, I cannot evaluate the damn postfix notation!  If you check out the first while loop in main you'll see thats where I get the segmentation fault.  </p>
  
  <p>If anyone has any idea I'd appreciate some pointers (lol).  </p>
  
  <p>Thanks</p>