swift - prepareForSeague error when running -

i'm creating application allows user click item in uitableview goes new screen information on clicked. i'm receiving 1 error when attempting run.

import uikit  class cartableviewcontroller: uitableviewcontroller {  var cars = [cars]()  override func viewdidload() {     super.viewdidload()      var newcar = cars(name: "audi", image: "iphone6", details: "iphone 6, apple, 2015")     cars.append(newcar)      newcar = cars(name: "bmw", image: "iphone6plus", details: "iphone 6 plus, apple, 2015")     cars.append(newcar)      newcar = cars(name: "bugatti", image: "iphone6plus", details: "iphone 6 plus, apple, 2015")     cars.append(newcar)      newcar = cars(name: "mercedes", image: "iphone6plus", details: "iphone 6 plus, apple, 2015")     cars.append(newcar)      newcar = cars(name: "lamboghini", image: "iphone6plus", details: "iphone 6 plus, apple, 2015")     cars.append(newcar)      newcar = cars(name: "ferrari", image: "iphone6plus", details: "iphone 6 plus, apple, 2015")     cars.append(newcar)      newcar = cars(name: "bmw", image: "iphone6plus", details: "iphone 6 plus, apple, 2015")     cars.append(newcar)      // uncomment following line preserve selection between presentations     // self.clearsselectiononviewwillappear = false      // uncomment following line display edit button in navigation bar view controller.     // self.navigationitem.rightbarbuttonitem = self.editbuttonitem() }  override func didreceivememorywarning() {     super.didreceivememorywarning()     // dispose of resources can recreated. }  // mark: - table view data source  override func numberofsectionsintableview(tableview: uitableview) -> int {     // #warning potentially incomplete method implementation.     // return number of sections.     return 1 }  override func tableview(tableview: uitableview, numberofrowsinsection section: int) -> int {     // #warning incomplete method implementation.     // return number of rows in section.     return cars.count }   override func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath) -> uitableviewcell {     let cell = tableview.dequeuereusablecellwithidentifier("carcell", forindexpath: indexpath) as! uitableviewcell      // configure cell...          var currentcars = cars[indexpath.row]         cell.textlabel?.text = currentcars.carname      return cell }   /* // override support conditional editing of table view. override func tableview(tableview: uitableview, caneditrowatindexpath indexpath: nsindexpath) -> bool {     // return no if not want specified item editable.     return true } */  /* // override support editing table view. override func tableview(tableview: uitableview, commiteditingstyle editingstyle: uitableviewcelleditingstyle, forrowatindexpath indexpath: nsindexpath) {     if editingstyle == .delete {         // delete row data source         tableview.deleterowsatindexpaths([indexpath], withrowanimation: .fade)     } else if editingstyle == .insert {         // create new instance of appropriate class, insert array, , add new row table view     }     } */  /* // override support rearranging table view. override func tableview(tableview: uitableview, moverowatindexpath fromindexpath: nsindexpath, toindexpath: nsindexpath) {  } */  /* // override support conditional rearranging of table view. override func tableview(tableview: uitableview, canmoverowatindexpath indexpath: nsindexpath) -> bool {     // return no if not want item re-orderable.     return true } */   // mark: - navigation  // in storyboard-based application, want little preparation before navigation override func prepareforsegue(segue: uistoryboardsegue, sender: anyobject?) {         var nextscene = segue.destinationviewcontroller as! displayviewcontroller if let indexpath = self.tableview.indexpathforselectedrow() {         let selectedcar = cars [indexpath.row]         nextscene.selectedcar = selectedcar } } 

i receive error @ bottom line stating expected declaration. i've attempted many ways fix can't figure out.

how try way-

rather going hassle attach segue , all, can use delegate method, didselectrowatindexpath

    func tableview(tableview: uitableview, didselectrowatindexpath indexpath: nsindexpath){         var nextscene = displayviewcontroller()         let selectedcar = cars [indexpath.row]         nextscene.selectedcar = selectedcar         //then push view controller on top of current view controller         self.navigationcontroller.pushviewcontroller(nextscene, animated: true)   } 

off course, need conform uitableviewdelegate.