In C code

Question 5 (20%) Given the following declarations: typedef struct list tag { int data; struct list tag * next; } ListNode; typedef struct { ListNode * first; } list; complete the function just before the last which returns the value of the node before the last one in single linked list. If the list is empty or it has only one node return-1. // Single linked list int just before the last(list *Ip) { 1/put your code here