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iOS Swift Basics (retired) Operators Binary Operators

John Moron
John Moron
1,658 Points
Posted by John Moron
John Moron
1,658 Points

The 'areaInFeet' constant was expected to be a 'Double', but it wasn't.

How do I type the areaInFeet as a double?

area.swift 
// the height and width of a wall
let height = 120.0 // in inches
let width = 144.0 // in inches
let areaInFeet = 120

1 Answer

Logan R
Logan R
22,989 Points
Logan R
Logan R
22,989 Points

120 is an integer. If you want a double, you need to make it 120.0.

The reason it is throwing the error is because of how the system works. An integer is any number without a decimal and a double is any number with a decimal.

Edit: Also, it doesn't want you to do it by hand. It wants you to do the calculations using the variables.

let areaInFeet = (height / 12.0) * (width / 12.0)
John Moron
John Moron
1,658 Points
John Moron
John Moron
1,658 Points

ohh I get thanks man :).