CODEWITHSUNDEEP
iosswift
BestGiraffeNigeria
BestGiraffeNigeria

Reputation: 39

Stuck on a arithmetic operation error

I am instantiating an array of UITextField's in the variable labels04. I loop to do some calculations. After the calculations, i attempt to use the index of the array to further calculate my algorithm but get a bad instruction error. 

    @IBOutlet var labels04: [UITextField]!
    var gpacalc1:Int = 0
    var gpacalcDivide:Int = 0
    var convertIndexGPA:Int = 0

On the line 

gpacalcDivide = gpacalculate / convertIndexGPA

i get a THREAD1:EXC_BAD_INSTRUCTION(CODE=EXC_I386_INVOP, subcode 0x0) 

    buttonContext
    {
    for label:UITextField in labels04 {


     //calculations ... 

    gpacalculate = gpacalculate + gpacalc!
    convertIndexGPA = labels04.index(of: label)!
    gpacalcDivide = gpacalculate / convertIndexGPA
    gpaTotalCalc.text! = "GPA: \(gpacalcDivide)"
    }
    }

I believe it has to do with using labels04.index(of: label)! command. Although it prints as an integer in the console, but when i attempt to use that value for an arithmetic operation I get prompted with the bad instruction error.

Is there a way out of this? Thank you

Upvotes: 0

Views: 815

Answers (1)

Lyndsey Scott
Lyndsey Scott

Reputation: 37290

During the first iteration of your for loop, labels04.index(of: label)! should equal 0 (i.e. the first index), so on the next line -- gpacalcDivide = gpacalculate / convertIndexGPA -- you'd be dividing by 0 which would result in an error.

Upvotes: 3

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