Question

hello i got a problem with returning an array of linklists in c
lets say i got

arrlinklist = {linklist1 , linklist 2...,linklist5}

and i want my function to return arrlinklist.
how do i do that… thx in advance.

---

i wanted to know how to define the signature of my function
i tried
linkedlist* CreateArrayOfList();

Answer 1

I assume you want something like this:
(there are no checks on this program, you should check for malloc failures etc’)

#include <stdio.h>
#include <stdlib.h>

typedef struct list1
{
    struct list1 *next;
    int data;
} list;

    list **
getArrayLists(int amount)
{
    list** arrayList  = malloc(sizeof(list[amount]));
    int i=0;
    for (i=0;i<amount;++i)
    {
        list *listPointer = malloc(sizeof(list));
        //let's start their data portion to be the index
        listPointer->data = i;
        arrayList[i] = listPointer;
    }
    return arrayList;
}

    int
main()
{
    list** arrayList = getArrayLists(10);
    int i=0;
    for(i=0;i<10;++i)
        printf("%d\n",arrayList[i]->data);

}