Create a variable named item and assign it an instance of Expense (remember to use the initializer with the description

task 3 asks you to create a variable named item and assign it an instance of Expense. creating an instance involves calling the init method for the struct. init methods are typically called like so:

Structname()

many initializers also take parameters. the init method for Expense takes one parameter, a description. remember that all initializer parameters have external parameter names that must be provided when called.

to assign a variable an instance of expense we call the init method:

var item = Expense(description: "some description of the expense")

then you need to assign the amount property of that instance a value of 100. to access properties of instances you use dot syntax:

instanceName.propertyName

so to assign the amount property of our item instance a value of 100 you would use:

item.amount = 100

make sure you place your code outside of the struct:

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

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

    // 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)) 
    }

}

var item = Expense(description: "some description of the expense")
item.amount = 100