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iOS Swift Basics (retired) Operators Binary Operators

Posted by Ricardo Gonzalez
Ricardo Gonzalez
324 Points

Its asking me for an annotation and I don't what its trying t tell me or what it means.

Need help in finishing the coding for binary operators. What am I doing wrong?

area.swift 
// the height and width of a wall
let height = 120.0 // in inches
let width = 144.0 // in inches
let areaInFeetDouble ;120.0 / 12 // in feet 
let areaInFeetDouble ;144.0 / 12 // in feet

1 Answer

Chase Marchione
Chase Marchione
155,055 Points
Chase Marchione
Chase Marchione
155,055 Points

Hi Ricardo,

  • Looks like you have some semicolons in there.
  • You'll want to name your constant 'areaInFeet'--that 'Double' part isn't necessary for this exercise.
  • You'll want to do the height and width calculations in one expression and store it in areaInFeet, which is how mathematically you'd want to get the area in feet.

Example Code:

// the height and width of a wall
let height = 120.0 // in inches
let width = 144.0 // in inches
let areaInFeet = (height / 12) * (width / 12) // in feet

Hope this helps!

Ricardo Gonzalez
Ricardo Gonzalez
324 Points

Thanks again CJ you have help me a lot!!!