Doubly-linked list/Element definition

Doubly-linked list/Element definition
You are encouraged to solve this task according to the task description, using any language you may know.

Define the data structure for a doubly-linked list element. The element should include a data member to hold its value and pointers to both the next element in the list and the previous element in the list. The pointers should be mutable.

C

struct link {
  struct * link next;
  struct * link prev;
  int data;
};