title: How to declare the nsurl variable with inital value as nil and also for nsarray?
body: <p>This is a simple and basics but I had a doubt that if it is declared globally with out initial value what happens ?</p>
  
  <pre><code>NSURL *finalURL; // here i need to initial value as nil if it is like this NSURL *finalURL=@""; giving warning.
  
  nssarry *array=nil; // is this correct.
  </code></pre>
  
  <p>Please give the reply,
  Thank You,
  Madan Mohan. </p>