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iOS Swift Basics (retired) Operators Binary Operators

Peter M Kreppein
Peter M Kreppein
15,120 Points
Posted by Peter M Kreppein
Peter M Kreppein
15,120 Points

I did declare a constant areaInFeet...

The code will work in XCode but not here, or perhaps I'm missing something.....

area.swift 
let height = 120.0 // in inches
let width = 144.0 // in inches
let heightFeet: Double = height / 12
let widthFeet: Double = width / 12
let areaInFeet: Double = heightFeet * widthFeet

1 Answer

landonferrier
landonferrier
25,097 Points

Peter, the treehouse code challenge compiler will not recognize the calculations when they are stored in different variables in this case.

Here is the correct code for the areaInFeet constant: 

 let areaInFeet = (width / 12) * (height / 12)

Although the grouping symbols (parenthesis) are not required, they can become very helpful when performing long calculations with programming because they make your calculations in a much more readable format.

If you have any questions, feel free to ask!