I have two text boxes and user can input 2 positive integers (Using Objective-C). The goal is to return a random value between the two numbers.
I ve used "man arc4random" and still can t quite wrap my head around it. I ve came up with some code but it s buggy.
float lowerBound = lowerBoundNumber.text.floatValue; float upperBound = upperBoundNumber.text.floatValue; float rndValue; //if lower bound is lowerbound < higherbound else switch the two around before randomizing. if(lowerBound < upperBound) { rndValue = (((float)arc4random()/0x100000000)*((upperBound-lowerBound)+lowerBound)); } else { rndValue = (((float)arc4random()/0x100000000)*((lowerBound-upperBound)+upperBound)); }
Right now if I put in the values 0 and 3 it seems to work just fine. However if I use the numbers 10 and 15 I can still get values as low as 1.0000000 or 2.000000 for "rndValue".
Do I need to elaborate my algorithm or do I need to change the way I use arc4random?