title: Convert NSString to currency format
body: <p>In Java we do this statement to have a $ currency format.</p>
  
  <pre><code>    double num1 = 3.99 ;       
      double num2 = 1.00 ;       
      double total = num1 + num2;
  
      System.out.printf ("Total: $ %.2f", total);
  </code></pre>
  
  <p>The result is:</p>
  
  <p>Total: $4.99</p>
  
  <p>//--------------------------------</p>
  
  <p>Now in iOS how can I get same format if I have the following statement :</p>
  
  <pre><code>total.text = [NSString stringWithFormat:@"$ %d",([self.coursePriceLabel.text intValue])+([self.courseEPPLabel.text intValue])+10];
  </code></pre>
  
  <p>Note:<br>
  If I use doubleValue the output always  is 0 .</p>