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

Howie F
Howie F
1,710 Points
Posted by Howie F
Howie F
1,710 Points

What's the answer to this?

What's the answer to this question?

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

    init (description: String) {
        self.description = description
        self.amount = 100.0
    }
func calculateTaxes(percentage: Double) -> Double {
      return self.amount * percentage / 100

}

}

var item: Expense

3 Answers

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points 
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)) 
}
    // add the calculateTaxes method here
    // it should accept only one parameter named 'percentage' of type Double

}

var item  = Expense(description: "Description")
item.amount = 100
var taxes = item.calculateTaxes(7.5)
Howie F
Howie F
1,710 Points
Howie F
Howie F
1,710 Points

Thanks Jhoan!

I tried this, but got the following error:

swift_lint.swift:16:1: error: expected declaration item.amount = 100 ^

What am I doing wrong?

Howie F
Howie F
1,710 Points
Howie F
Howie F
1,710 Points

Never mind - my curly braces weren't matching up. Thanks!