ios - PDF-viewer problems -

i following tutorial, because need view pdf-documents in app. link tutorial: https://www.youtube.com/watch?v=ttkoddecri0 after made tableview, , tried create .m , .h, nothing shoving in document, wrote myself , got following errors. hold3januar.m

#import "hold3januar.h"  @interface hold3januar ()  @end 

cannot find interface declaration 'hold3januar'

@implementation hold3januar 

cannot find interface declaration 'hold3januar'

- (id)initwithnibname   (nsstring *)nibnameornil bundle:nsbundle *)nibbundleornil 

expected method body

    self = [super initwithnibname:nibnameornil bundle:nibbundleornil]; if (self) { 

'hold3januar' cannot use 'super' because root class

    // custom initialization     }     return self; }  - (void)viewdidload {     [super viewdidload];     // additional setup after loading view. } 

'hold3januar' cannot use 'super' because root class

- (void)didrecievememorywarning]; 

expected method body

{ 

expected identifier or '('

 [super didrecievememorywarning];     // dispose of ressources can recreated. }  @end