text: //
  //  ViewController.h
  //  BackgroundTask
  //
  //  Created by runo on 17/1/4.
  //  Copyright © 2017年 com.runo. All rights reserved.
  //
  
  #import <UIKit/UIKit.h>
  
  @interface ViewController : UIViewController
  
  @property(nonatomic,readonly,assign) NSInteger age;
  
  @end
  
  