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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Jason Teo
PLUS
Jason Teo
Courses Plus Student 8,398 Points

Hello everybody, I can't seem to solve this problem. Any help please?

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

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

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

}

struct.swift
struct Expense {
    var description: String
    var amount: Double = 100
    var item: String

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

    // 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

William Li
PLUS
William Li
Courses Plus Student 26,868 Points

Hi, Jason. In your code, you're adding item to the initialize method, but the question asking you to do is create a new instance of Expense and assign to item variable. So you shouldn't change what's already in 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: "whatever description")
item.amount = 100