Spot the error
This Swift code contains one error – can you select the line that is incorrect?
Tip: You should mentally run the code from top to bottom, meaning that if line 3 says an integer should be returned and line 10 tries to return a string, line 10 is the wrong one.
func performExercise(repetitions: Int, type: String) -> String { var returnValue: String = "" for _ in 0 ..< repetitions { returnValue += "I'm doing a \(type)\n" } if repetitions < 10 { returnValue += "That was easy!" } else if repetitions < 30 { returnValue += "That was challenging!" } else { returnValue += "Phew - I need a break!" } return returnValue}print(performExercise(repetitions: 42.5, type: "squat"))
