Diving the result of an arc4random_unifrom gives me 0

Question

I am trying to create a decimal between 0 and 1 so I am creating an Int between 0 and 10000 then dividing it by 10000 (an Int) to get the decimal.

AtBatResult = Int(arc4random_uniform(UInt32(10000)))

This line of code gives me number which is fine.

AtBatResult = AtBatResult / Int(10000)

When I run this line of code however, the number becomes 0 no matter what. What is happening here? Thanks in advance!

Answer 1

You've declared atBatResult to be an Int. You can't assign a decimal value to it. And you are doing integer division.

You need a Double variable and you need to do decimal division.

Here's one way:

let atBatResult = Int(arc4random_uniform(UInt32(10000)))
let finalResult = Double(atBatResult) / 10000

Or you can do:

let atBatResult = Double(arc4random_uniform(UInt32(10000))) / 10000

This will make atBatResult a Double instead of an Int.

FYI - it is standard naming convention to start method and variable names with lowercase letters. Class names start with uppercase.