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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Posted by David Rodriguez Saavedra
David Rodriguez Saavedra
3,574 Points

im stock in these activity

can anyone can help me with these

struct.swift 
struct Expense {
    var description: String
    var amount: Double = 0.0

    init (description: String) {
        self.description = description
    }

  func calculateTaxes(percentage: Double){
    return "\(self.amount) * \(percentage/100.0)"
  }
}

1 Answer

mattlebl
mattlebl
10,849 Points

I have a feeling you are having trouble with the "Add a Double as a return type" instruction. In Swift, return types are defined with a dash, and then a greater than sign, making a sort of arrow: "->" This is what it looks like implemented:

func calculateTaxes(percentage: Double) -> Double /* ADDED THIS */ {
  return self.amount * (percentage/100.0)
}

You'll also notice I removed the quotes. You were returning a string, we needed to return a Double instead.