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iOS Swift Enums and Structs Structs and their Methods Struct Methods

becky hayes
becky hayes
2,226 Points

Not sure what i'm doing wrong

Should i be putting anything after the purple arrow if the code isnt mean to be returning anything?

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

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

    func calculateTaxes (percentage: Double) -> String {


1 Answer

Steven Deutsch
Steven Deutsch
21,046 Points

Hey Becky Hayes,

No. You do not specify a return type if your function is not returning anything. If you don't specify a return type, a return of Void is implied. There are 3 ways to write a void return type:

// Function Returns Void - Method 1
func calculateTaxes(percentage: Double) {


// Function Returns Void - Method 2
func calculateTaxes(percentage: Double) -> () {


// Function Returns Void - Method 3
func calculateTaxes(percentage: Double) -> Void {


Good Luck