If you need to generate random numbers in an application must set aside Apple iPhone Objective-C, because it does not propose any class order. The solution is proposed that the C: rand(), srand(), random(), srandom() e arc4random() .
Among the most popular is definitely arc4random() , because it does not require any special initialization or seeding functions, returning a good value "random", we could say that it is self-inizializzante.
1 2 3 4 5 | / / Generate a random number from 0 to 99 arc4random ( ) % 100 ; int rnd = arc4random ()% 100; / / Generate a random number from 20 to 70 (thx Luke) ( arc4random ( ) % 51 ) + 20 ; int rnd = (arc4random ()% 51) + 20; |
First of all, thanks ... I found many useful information in this blog, I just iphone developer to (time lost) ...
Do not want to sound picky, and I have not even tried it on xcode, but I think there is an error in line 4 the comment .. I think that generated numbers go from 20 to 70 ...
anyway thank you very much for what you do.
Keep it up!
@ Luke: you're not picky, indeed. It is a mistake, which I correct immediately. In the tests I had done wrong I copied a line that had to be so (to show how to set a range):
Which corresponds to the comment
Thank you for everything, for the compliments and the error correction ... (they were all so attentive as you) 