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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Gregory Marquet
Gregory Marquet
8,391 Points

Stuck on Challenge Question: Swift Enums and Structs

The is to "figure out the tax amount with the percentage is 7.5. Call the method calculateTaxes on the variable 'item' and assign the result to a new variable named taxes."
I am not sure how to call the calculateTaxes method on the variable 'item,' what is the syntax for this and should it happen inside the curly braces or outside?
Thank you for any help!!

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: "Amount with taxes")
item.amount = 100.0

1 Answer

Chengyu Deng
Chengyu Deng
7,879 Points

Since you already define a method in the struct, you can use item.calculateTaxes(7.5) to get the answer. 7.5 is the require percentage which is the parameter in this method. Hope this helps!!