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iOS Swift Basics (retired) Operators Binary Operators

Posted by Jean Chevalier
Jean Chevalier
230 Points

1 foot = 12 in therefore the area in feet should be divided in ft

are we going to get any help?

area.swift 
// the height and width of a wall
let height = 120.0 // in inches
let width = 144.0 // in inches
let areInFeet = (120.0 * 144.0 )/ 12

2 Answers

Gene Osborne
Gene Osborne
8,630 Points
Gene Osborne
Gene Osborne
8,630 Points

You need divide each dimension by 12 to convert it to feet. Currently you are dividing the area by 12, which is not the same thing.

So, 120/12 * 144/12 = 10 * 12 = 120

Daniel Rosensweig
Daniel Rosensweig
5,074 Points
Daniel Rosensweig
Daniel Rosensweig
5,074 Points

Gene's answer will fix your calculation. Divide height and width EACH by 12, rather than just your answer. I used parentheses to make this clearer in my answer, but they aren't necessary for the math to work out.

However, you may still be failing the challenge for a silly reason: you misspelled "area". People will know what you meant, but a computer will just look and say there's no constant areaInFeet. A silly typo can make your whole program fail -- be careful!

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