I was practicing program problems without answer.

Not sure on how to write this program and I need help. it needs to be in C language. Thank you!

Assume the node structure is as follows: struct node { int data; struct node "next; struct node "prev; please write a function struct node *merge(struct node *g. struct node 'n) to merge two doubly linked lists contains integer numbers without duplicates in the increasing order. You have to remove duplicates. Also show how to call this function