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超初見者による超簡単カウンターアプリ。(レイアウト無視)

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import UIKit

class ViewController: UIViewController {

@IBOutlet var countLabel: UILabel!

var resultBox = 0


override func viewDidLoad() {
    super.viewDidLoad()
    countLabel.backgroundColor = UIColor.blue

}

@IBAction func puls(_ sender: Any) {
    
    resultBox +=  1
    
// countLabelのtextに整数を文字列に変換して入れる事
    countLabel.text = String(resultBox)

}

@IBAction func minus(_ sender: Any) {
    
    resultBox -=  1
    
    countLabel.text = String(resultBox)

}



override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}

}

スクリーンショット 2018-08-27 0.00.55.png

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