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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Matthew Turk
Matthew Turk
6,155 Points

Bummer! The taxes variable was expected to be a Double, but it wasn't!

On the last objective of the final Challenge of Structs and Their Methods, I thought I was all set with this code:

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)
   }
    // it should accept only one parameter named 'percentage' of type Double

}

var item = Expense(description: "Something")
item.amount = 100

var taxes = Expense.calculateTaxes(item)

Unfortunately, it told me the the taxes variable I declared had to be of type double. I checked for complier errors and there were none. I'm confused and any help would be appreciated.

1 Answer

Laurence Bowe
Laurence Bowe
6,222 Points

Hey, Don't worry about being confused we all get this moment some point in learning swift!!!

Here is the code:

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) } // it should accept only one parameter named 'percentage' of type Double

}

var item = Expense(description: "Something") item.amount = 100 var taxes = item.calculateTaxes(7.5)

Hope that helps and goodluck!!!