Instructions say numbers shouldn't be negative or zero. So, if you had 2,4,-1 and the if statement isn't there to for int >=0 how does this solution account for it?

0+0 is not greater than 0 so it'll return false anyways

you can test it yourself, actually idk why but solution works right. if you pass zeros to the arguments the function returns false anyway

If we pass (0,0,0) or negative values? Seems this solution doesn't work