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iOS Swift Enums and Structs Structs and their Methods Struct Methods

Jaskirat Singh
Jaskirat Singh
1,652 Points

HELP!

It says I am doing something wrong in the last line.... What AM I DOING WRONG!?!?

struct.swift
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: "This is so Expensive!")
Expense.amount = 100

2 Answers

item.amount

Expense is just the name of the struct. You initialized Expense with a description and set it to a variable named item. Now item inherits the properties and methods of Expense including the "amount" property which can be accessed through dot notation as item.amount

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: "Description")
item.amount = 100