ios - Setting the text of a UILabel -

i'm using new xcode beta (which might issue coming from).

i followed online tutorial, making simple counter app.

the issue have line followed below:

outputlabel.text = "the button has been clicked \ (currentcount) number of times" 

the whole code followed:

class viewcontroller: uiviewcontroller {      @iboutlet weak var outputlabel: uilabel!      var currentcount = 0       override func viewdidload() {          super.viewdidload()          // additional setup after loading view, typically nib.     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }       @ibaction func addonebutton(sender: uibutton) {          currentcount = currentcount + 1         outputlabel.text  = "the button has been clicked \(currentcount) number of times"         outputlabel.textcolor = uicolor.redcolor()      } 

the issue is:

use of unresolved identifier outputlabel

why can't code find outputlabel?

it must this,

let outputlabel = uilabel(frame: cgrectmake(0, 0, 100, 30)) outputlabel.text = "the button has been clicked \(currentcount) number of times" 

you missing declaration of label.

or

if using via @iboutlet, make sure have connected outputlabel in nib/storyboard file.

or

recheck declaration, might different outputlabel , using outputlabel.