Linked list merge sort

[s.aditya.me (S Aditya)]

My Code : Click Here

I am getting a runtime error whenever I try to run a mergesort for my given linked lists.

Please help me to figure it out.

[Ashwin (Ashwin S)]

while finding the mid point it should be: fp!=NULL && fp->next != NULL instead of fp!=NULL || fp->next != NULL