Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Swift Enums and Structs Structs and their Methods Struct Methods

Josh Smith
Josh Smith
1,049 Points

Where is this wrong?

This is apparently wrong but i have no idea why?

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

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

func calculateTaxes(percentage: Double) {
   return self.amount * (percentage/100))

  }
}

3 Answers

Holger Liesegang
Holger Liesegang
50,595 Points

Hi Josh!

You might want to try this:

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))
  }
}

The return type -> Double and the open bracket before self.amount has been missing.

Missing the return on the func declaration? -> Double

Missing the return on the func declaration? -> Double

Josh Smith
Josh Smith
1,049 Points

Hi Ernie,

Thanks for responding. Could you elaborate for me please? I experimented adding in -> Double in muliple places but still nothing could be compiled.

Appreciate your help