title: How to get an int in decimal from a Hex NSString
body: <p>I would like to get a dec value from a Hex-encoded string, 
  for examples: A->10, B->11,etc.
  and I coded as the following</p>
  
  <pre><code>NSString *tempNumber;
  tempNumber=number.text; 
  NSScanner *scanner=[NSScanner scannerWithString:tempNumber];
  unsigned int temp;
  [scanner scanHexInt:temp];
  NSLog(@"%@:%d",tempNumber,temp);
  </code></pre>
  
  <p>but the NSLog output isn't what I perfer..</p>
  
  <pre><code>2012-01-24 01:34:57.703 TestingUnit[34861:f803] 4:-1073750472
  2012-01-24 01:35:01.133 TestingUnit[34861:f803] 6:-1073750408
  2012-01-24 01:35:01.983 TestingUnit[34861:f803] 2:-1073750408
  2012-01-24 01:35:02.414 TestingUnit[34861:f803] 1:-1073750408
  </code></pre>
  
  <p>could someone tell me how can I solve this????</p>