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iOS

Posted by Trent Burkenpas
Trent Burkenpas
22,388 Points

Need help with code challenge.

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

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

    func calculateTaxes(percentage:Double) -> Double {

      return self.amount * percentage/100

    }

}

var item = Expense(description: "Cat Food!")
item.amount = 100
item.calculateTaxes(percentage: 7.5)
var taxes = item

Not sure what to do here...

this is my swift error, I don't quite understand it

swift_lint.swift:21:20: error: extraneous argument label 'percentage:' in call item.calculateTaxes(percentage: 7.5)

1 Answer

Jennifer Morkunas
Jennifer Morkunas
20,037 Points
Jennifer Morkunas
Jennifer Morkunas
20,037 Points

You are almost there, you just need to add parentheses around the return:

return (self.amount * (percentage/100))

Trent Burkenpas
Trent Burkenpas
22,388 Points

ohh because of math operations?

well that didn't seem to be the issue. Its telling me know that the taxes variable is not a Double