Human factor reducing time complecity ^o^

You can tell sscanf to ignore a segment by adding * to the format specifier.

sscanf(ip, "%*d.%d.%d.%d", lowies, lowies+1, lowies+2);

This saves an extra unsigned variable.

The real abomination is modern website and OS design and planned obsolescence enacted through willful anti-efficiency. But the 17th ret*=59; overflows unsigned long long anyway. I simply precomputed the final answers, and 24 was still overkill, and now I can see that the last third of even those few are simply wrong.

maybe add braces, at least in the 42 network this wouldn't be considered norme

I don't agree with you

How would you simplify it?

i think it's uneed complicated

that's just a geneal statement, not specific to the task ~~

Your task is to find out what this is and write a function that will add two strings together, there must be a space between the two strings.

Writing this abomination is more tedious that writing a proper solution.

Yes, indeed

Runtime per se won't be a problem here (maybe it is about 0.4ms). The real trouble is, that this ends up in an infinite loop for values above the square closest to INT_MAX.

Nice !

But what about big numbers, according compute time (eg: 2147395600 or 2147483647)

Well, I feel dumb for not figuring out a fast enough algorithm for this.