iphone - What causes this Objective-C compile error: Stray '\235' in Program -

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#import "instatwitviewcontroller.h"  @implementation instatwitviewcontroller   - (nsinteger)numberofcomponentsinpickerview:(uipickerview *) pickerview {  return 2; }  - (nsinteger)pickerview:(uipickerview *) pickerviewnumberofrowsincomponent :(nsinteger)component {  if (component == 0)  return [activities count]; else  return [feelings count];  }  /* // designated initializer. override perform setup required before view loaded. - (id)initwithnibname:(nsstring *)nibnameornil bundle:(nsbundle *)nibbundleornil {     if ((self = [super initwithnibname:nibnameornil bundle:nibbundleornil])) {         // custom initialization     }     return self; } */  /* // implement loadview create view hierarchy programmatically, without using nib. - (void)loadview { } */    // implement viewdidload additional setup after loading view, typically nib. - (void)viewdidload {     [super viewdidload];  activities = [[nsarray alloc] initwithobjects:@”sleeping”, @”eating”, @”working”, @”thinking”, @”crying”,      @”begging”, @”leaving”, @”shopping”, @”hello worlding”, nil];  feelings = [[nsarray alloc] initwithobjects:@”awesome”, @”sad”, @”happy”, @”ambivalent”,      @”nauseous”, @”psyched”, @”confused”, @”hopeful”, @”anxious”, nil]; }    /* // override allow orientations other default portrait orientation. - (bool)shouldautorotatetointerfaceorientation:(uiinterfaceorientation)interfaceorientation {     // return yes supported orientations     return (interfaceorientation == uiinterfaceorientationportrait); } */  - (void)didreceivememorywarning {  // releases view if doesn't have superview.     [super didreceivememorywarning];   // release cached data, images, etc aren't in use. } - (nsstring *)pickerview:(uipickerview *)pickerview titleforrow:(nsinteger)row forcomponent:(nsinteger)component {   switch (component) {    case 0:    return [activities objectatindex:row];    case 1:    return [feelings objectatindex:row];  }  return nil; }  - (void)viewdidunload {  // release retained subviews of main view.  // e.g. self.myoutlet = nil; }   - (void)dealloc {     [activities release];   [feelings release];   [super dealloc]; }  @end

i following erros

stray '\235' in program - , 100 more different numbers missing sentinel function call incomplete implementation of class instatwitviewcontroller

any help, doing tutorial book, copied exactly, , don't see whats wrong

your code contains smart quotes. need straight quotes.

lines this:

activities = [[nsarray alloc] initwithobjects:@”sleeping”, @”eating”, @”working”, @”thinking”, @”crying”,      @”begging”, @”leaving”, @”shopping”, @”hello worlding”, nil];

need be:

activities = [[nsarray alloc] initwithobjects:@"sleeping", @"eating", @"working", @"thinking", @"crying",      @"begging", @"leaving", @"shopping", @"hello worlding", nil];

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