title: Cant use @property in objectiveC xcode
body: <p>I am a beginner in objective C and I am using the following code
  I am using xcode6</p>
  
  <pre><code>// Car.h
  #import &lt;Foundation/Foundation.h&gt;
  
  @interface Car : NSObject {
      NSString *simple_name;  //This is private
      @property int mssp;     //Cant use @property Error illegal visibility specification
  }
  
  -(void) sayHi:(NSString*)msg ;
  @end
  </code></pre>
  
  <p>Any suggestions on why I am getting this error ?</p>