startNewRound.swift

// our method is called startNewRound and it does not take any parameters

func startNewRound( ) {
  
  targetValue = 1 + Int(arc4random_uniform(100)) 
  // This generates a new random number between 1 and 100
  
  currentValue = 50
  slider.value = Float(currentValue)
  // So when a new round starts, the slider and the currentValue
  // are both reset to 50 or the middle of the slider

}