How to implement a linked list in C?

Question

I am creating a linked list as in the previous question I asked. I have found that the best way to develop the linked list is to have the head and tail in another structure.

Answer 1

You're calloc'ing space for your list_t struct, just pointers to list head and tail, which isn't what you want to do.

When you add to a linked list, allocate space for an actual node in the list, which is your product_data_t struct.