Number to word help with chars

[abdeir1]

I'm working on a project that turns numbers to words as a training exp. But I'm facing a problem, I'm using a method to collect first 3 chars as shown bellow:

NSString *a=[[NSString alloc]initWithFormat:@"%d",[snumber characterAtIndex:(0,3)]];
	
	int millions  = (int)a; 
	
	NSString *s=[[NSString alloc]initWithFormat:@"%d",[snumber characterAtIndex:(3,6)]];
	int hundredThousands = (int)s; 
	
	NSString *d=[[NSString alloc]initWithFormat:@"%d",[snumber characterAtIndex:(6,9)]];
	int thousands = (int)d;

but I keep getting the out of range error below:

2010-09-02 19:29:20.773 convert[412:207] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFString characterAtIndex:]: Range or index out of bounds'

and the throws.

[kapps11]

well the error means that sometimes when you access those characters, u go too far and they dont exist. Im assuming this is because sometimes you get a number like 5, and there is no thousands place, and so the app crashes. Just add in a check to see if that character exists bfor u set it and ull b fine.

[abdeir1]

Tried that, I even gave a string with all 10 numbers. I'm thinking of turning it to int, using a number formatter on it, and then return it to a string, but as I said before I gave it a string in that format, could it be that characterAtIndex can only deal with one index?

[abdeir1]

Solved turned out an int has a smaller range than I thought.