Nsrange problem when it should return 0

Question

So, I am trying to search an nsstring for a term us rangeFromString, but whenever there is not anything matching that result, I get something along the lines of 2748601949 as opposed to 0. I am trying to, for example, locate @"sin(",@"cos(", and @"tan(" in a string like @"1+sin(28)+cos(72)". Thank you

Answer 1

It's returning NSNotFound, which is defined in NSObjCRuntime.h like this:

enum {NSNotFound = NSIntegerMax};