How do I put a limit for the computer to pick a number randomly. This limit is already picked by the user

Asked May 18 '16 at 02:17

Active May 18 '16 at 02:18

Viewed 38 times

This line of code is not working.

    randnum = Double(arc4random() % Double(limit))

The error gives Binary operator '%' cannot be applied to operands of type 'UInt32' and 'Double'

How do I get the computer to select a random number between 0 and the limit picked by the user.

edited May 18 '16 at 02:18

bneely

asked May 18 '16 at 02:17

Is `limit` small enough to fit on `int`? – alvits May 18 '16 at 02:18
nevermind i have fixed my problem, thank you for the other links. – Rian Arul Emris Ruban May 18 '16 at 02:31
1

According to Apple, use `arc4random_uniform(limit)` instead of `arc4random() % limit` to avoid modulo bias. Here's the [reference](https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man3/arc4random_uniform.3.html). – alvits May 18 '16 at 02:33
http://stackoverflow.com/a/34712601/2303865 – Leo Dabus May 18 '16 at 03:33

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