title: NS_ENUM as NSNumber with" @"
body: <p>The following is true.</p>
  
  <pre><code>NSNumber *a= @90;
  </code></pre>
  
  <p>But, If I have NSInteger in a NS_ENUM and use "@" prefix it says "Unexpected '@' in a program"</p>
  
  <pre><code>typedef NS_ENUM(NSInteger,Names){John=1};
  
  NSNumber *a= @John;
  </code></pre>