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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Whats wrong with this answer?


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

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

    func calculateTaxes("percentage") -> Double {

    // add the calculateTaxes method here
    // it should accept only one parameter named 'percentage' of type Double


1 Answer

"it should accept only one parameter named 'percentage' of type Double"

    func calculateTaxes(percentage: Double) {

What you did in your code was pass a String called "percentage" to your program. What was required was a variable named percentage, indicated by the "percentage" value. Next, we need to assign percentage a type of Double and remember in Swift we use ":" followed by the variable type:

let percentage: Double