BMI calculator compiler error swift

Question

var BMIValue = (WeightTextField*703)/(HeightTextField*HeightTextField)

My error:

Cannot invoke '/' with an argument list of type '(($T5), ($T11))'

I had made an attempt on making a simple BMI calculator however this function that I have typed out constantly brings compiler errors. Can someone please help me. Thank you very much.

thanks , i have one last question , must I assign the input provided as WeightTextField.text or just plain WeightTextField — roshan, Nov 11 '14 at 10:47
@roshan, is it not yet suspicious multiplying and dividing `UITextField` instances to you...? you have to convert their `text` value to number for doing arithmetical operands... — holex, Nov 11 '14 at 10:50
@holex , i don't really understand , could you explain in a bit more simpler terms to me. I'm new to this. Thanks — roshan, Nov 11 '14 at 10:52
@roshan, if you are newbie, first you need to read more about `UITextField`, here: https://developer.apple.com/library/ios/documentation/UIKit/Reference/UITextField_Class/index.html and converting string to number, e.g. here: http://stackoverflow.com/questions/24085665/convert-string-to-float-in-apples-swift — holex, Nov 11 '14 at 10:53
@holex , i tried doing what is shown in the answer but i get a new problem , the code breaks at abc.toInt()! — roshan, Nov 11 '14 at 11:23
Do you know what to do in this case , also , while running the app in the simulator , the app freezes after i click the button — roshan, Nov 11 '14 at 11:24

score 0 · Answer 1 · answered Apr 04 '15 at 15:32

This solution , converts UITextfields text into Floats and then assign BMI value to another float variable.

var weight = (WeightlTextField.text as NSString).floatValue
var height = (HeightTextField.text as NSString).floatValue
var BMIValue = (weight*703)/height

Hope this helps .

BMI calculator compiler error swift

1 Answers1