Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift Enums and Structs Structs and their Methods Struct Methods

Josh Smith
Josh Smith
1,049 Points
Posted by 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
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.

Ernie Ayon
Ernie Ayon
3,441 Points
Ernie Ayon
Ernie Ayon
3,441 Points

Missing the return on the func declaration? -> Double

Ernie Ayon
Ernie Ayon
3,441 Points
Ernie Ayon
Ernie Ayon
3,441 Points

Missing the return on the func declaration? -> Double

Josh Smith
Josh Smith
1,049 Points
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