Hey, guys, I'm having trouble with this one... Here's my code:

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>

char *strsum(const char *a, const char *b){
char *str;

asprintf(&str, "%ld", atol(a)+atol(b));

return str;

}

But i keep receiving the following error:

*Actual: -2
Expected: 712577413488402631964821329
Arg A: 712569312664357328695151392
Arg B: 8100824045303269669937

I'm almost sure this is a overflow error... However I don't know how to solve it... Can someone help me out?

Wooow, thank you, man! Silly mistake.. XD

I had an issue with the first test ->dotest(5750, 0, 4700)<-, if I change it for ->dotest(5750, 0, 4699)<- it works perfectly and ALL the other tests pass as well...
My code works just fine for the given examples on the description and on all the other tests too... :/