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

Joel Lithgow
Joel Lithgow
7,414 Points
Posted by Joel Lithgow
Joel Lithgow
7,414 Points

Error with code?

Whats wrong with this code? The output isn't showing anything and the playground on Xcode isn't showing any errors either.

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

    init (description: String, item: String) {
        self.description = "description"
        self.item = "item"
        amount = 100
    }


    // add the calculateTaxes method here
    // it should accept only one parameter named 'percentage' of type Double
    func calculateTaxes (percentage: Double) -> Double {
        return (self.amount * (percentage/100))
    }
}

1 Answer

Stephen Whitfield
Stephen Whitfield
16,771 Points
Stephen Whitfield
Stephen Whitfield
16,771 Points

In your code, you're setting "self.description" and "self.item" to the wrong strings. Set them to the values being passed to the init function, which happen to be strings as well.

self.description = description
self.item = item
Joel Lithgow
Joel Lithgow
7,414 Points
Joel Lithgow
Joel Lithgow
7,414 Points

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

init (description: String, item: String) {
    self.description = description
    self.item = item
    amount = 100
}

// add the calculateTaxes method here
// it should accept only one parameter named 'percentage' of type Double

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

} '''

I tried this code and now it still doesn't work either. The console doesn't give me any errors either.