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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Edwin Mhoy Silva Rifa
Edwin Mhoy Silva Rifa
2,631 Points
Posted by Edwin Mhoy Silva Rifa
Edwin Mhoy Silva Rifa
2,631 Points

We need to figure out the tax amount when the tax percentage is 7.5 percent. Call the method calculateTaxes on the varia

Help, i don´t know what I´m been asked to do?

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

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

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

}
var  item = Expense(description:"kage")
var 
calculateTaxes()
Jan Gooßens
Jan Gooßens
22,344 Points
Jan Gooßens
Jan Gooßens
22,344 Points

Some time ago i did the same excercise... if i remember correctly it was something like that :

var result = item.calculateTaxes(7.5)

You have to store the result of item with 7.5 % taxes in a variable (in this case "result")

we call the function calculateTaxes on item, It waits for a Double (7.5)

hope i can help you. Im new to swift so still learning, too :)

Gareth Gomersall
Gareth Gomersall
2,890 Points
Gareth Gomersall
Gareth Gomersall
2,890 Points

Edwin Rifa the code should be like Jan Goo said above

i.e. 

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))
    }
}

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

var taxes = item.calculateTaxes(7.5)

1 Answer

agreatdaytocode
agreatdaytocode
24,757 Points
agreatdaytocode
agreatdaytocode
24,757 Points

Try

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))
    }
}

var item = Expense(description: "item")
item.amount = 100.0

var taxes = item.calculateTaxes(7.5)