res is overwritten by asprintf, so we need to save previous value of res to free memory.

No worries. Your solutions are always nice.🙌

No reason. Looks like a mistake.

I don't understand the algorithm . Can anybody help?

what is the work of the pointer prev in this answer?

okay.

TDD.

You should raise issue about missing test case.

With no argument your solution will be false. As it is mentioned in kata if no argument present return all elements .

for n = 0 , it will not work as asked in the kata
(in kata it is mentioned that if n = 0 print '\n').

Hii, I think here that second line under the function containAllRots
(if (strcmp(strng, "") == 0) return 1;)
is not required because loop will not start if strng is empty and it will directly return 1;

Really Good.

I first wrote this same solution , but everytime my code was running out of time. I dont know why. so I changed my solution and it worked . I think might be server problem because this solution is more efficient.

sorry , forgot to delete unused variables.