title: Converting string with points into decimal number in objective-c
body: <p>I'm trying to implement simple calculator using Objective-C. Here's my problem:</p>
  
  <pre><code>_currentNumber = @"4.65";
  _num1 = [_currentNum intValue];
  </code></pre>
  
  <p>Obviously, this code above returns "4" instead of 4.65.</p>
  
  <p>How could I make it return a decimal number?</p>