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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Perry Lin
Perry Lin
1,190 Points
Posted by Perry Lin
Perry Lin
1,190 Points

Swift Enum: Cannot create a variable

Hi there! I'm unsure why there's an error when trying to create the variable 'item'. Pls assist, thanks!

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: "Any Description", amount: 100)

2 Answers

Nathan Tallack
Nathan Tallack
22,159 Points
Nathan Tallack
Nathan Tallack
22,159 Points

While what you are doing is valid code, one thing the challenge asked you to do was to set the amount on a separate line.

Like this.

var item = Expense(description: "Any Description")
item.amount = 100

They are doing this so that you can comprehend that a stored property can be changed on a variable after it is created. :)