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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Structs and their Methods (3/3)

What does the error message mean?

Create a variable named item ... be sure to assign the amount on the next line!

struct.swift
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: "Resturaunt Taxes", amount: 100)

1 Answer

Jason Safdie
Jason Safdie
3,461 Points

You're close, but read the task again in part 3/4. Not sure if you wanted to see part 4 solved, but see below for part 3 solved. When you reread the part 3 task and look at my code, hopefully a lightbulb will go off.

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: "Business")
item.amount = 100.0