its good to note this would not work for a string with non-numeric characters.

The kyu is given by a moderator, not by the author.

Great Kata. Yet I found this kata alot easier from other katas of yours in 7kyu. Is there a moderator to evaluate kata difficulty, or it is your decision?

Yes, of course, but most experienced C programmers find it easier to read without the extra ?: operator around the return value.

Right, though does the same!

return (sum>0)? 1 : 0 ;

There is no need for the paranthesis around the expression, it just adds noise.
sum > 0 already has the value 1 or 0, so there is no need to convert it again, just return it:
return sum > 0;

You can call out code or a command with backticks ` before and after your code, also mark your comment as a spoiler if it contains code.

I agree that I should have specified that an empty array is equal to 0 in this problem. I have added it to the notes section of the description. Thanks for the feedback.

It is just a comment on the Kata and its relation to what can occur on the job, as it were. As I said, this is a game. thank you for playing.

I really couldn't figure out the appropriate label for this comment or what it aims for! What are you trying to theorize here?

I apparently misinterpretted the instructions, i was solving a different problem. Thanks anyway