Hi,
If you want to copy stuff from one linked list to another, you can do it manually by reallocating the list. I've written some code below but it was done quickly, I hope this points you in the right direction and let me know if you have any questions. I'm not sure if it will compile (it's mostly to be taken as pseudocode) but it should give you an idea. Good luck!
struct listItem {
struct listItem* next; //next listItem in linked list
int value; //value
};
void copyList(struct listItem*, struct listItem*);
void copyList(struct listItem* firstList, struct listItem* destList)
{
struct* copyingItem = firstList; //caller may want to do stuff with the first list.
struct list* copyTo = destList; //so we don't lose the pointer to the beginning of the new list
while (copyingItem != NULL) { //makes sure we don't copy a null list
copyTo->value = copyingItem->value;
if (copyingItem->next != NULL) {
copyTo->next = (struct listItem*)malloc(sizeof(struct listItem));
copyTo = copyTo->next;
} // If there's still a next item
copyingItem = copyingItem->next;
} //while
}