I am having issues with indexing, my logic should be correct but it still gives the wrong answer, anybody notice some stupid mistake i might be making?

why is this kata so high level, was not 5 kyu difficulty kata imo.

Thanks for the response, i knew about that integer thing but didn't use it.

Think i am making a mistake somewhere but i don't know where, any suggestions or possible mistakes i could have made. (in C)

Solution worked on other IDE but here returns "r = 0, g = 0, b = 0 expected "��E�H�� ]�fD", but got "000000"" witch is more than confusing.
Anyone else had the same issue if so what is the fix, i think i'm messing with the memory addresses that the test function uses.
(in C)