title: How to pass values by reference in objective C (iphone)
body: <p>I have a very basic question. I'm a new iPhone programmer. 
  My question is can anybody tell me how can I pass values by reference to a function in obj. C? I know how to do it in VB and C#. But don't know how to do it in Obj c.</p>
  
  <p>Thanks</p>