

@IBOutlet weak var switch1: UISwitch!
@IBOutlet weak var switch2: UISwitch!
@IBOutlet weak var switch3: UISwitch!
@IBAction func switch1Change(_ sender: UISwitch) {
if switch1.isOn {
switch2.setOn(false, animated: true)
switch3.setOn(false, animated: true)
} else {
switch2.setOn(true, animated: true)
switch3.setOn(true, animated: true)
}
}