Need help sorting a linked list. Beginner

HERES MY CODE:

Code:

#include <stdio.h>    /* for printf */
#include <stdlib.h>   /* for malloc */

typedef struct node
{
    char player_id[7];
    int level;
    int score;

    struct node *next; /* pointer to next element in list */
} *LIST;

LIST new_list() // Create new list by creating sentinel node
{
    LIST list = (LIST) malloc(sizeof(struct node));
    list->next = NULL;
    return list;
}

// Add node to beginning of list
LIST list_add(LIST list, int i)
{
    LIST new_node = (LIST) malloc(sizeof(struct node));

    if (new_node == NULL)
        return NULL;

    new_node->score = i;
    new_node->next = list;
    return new_node;
}

LIST list_remove(LIST list) /* remove node */
{
    LIST n;
    if (list->next == NULL)
    {
        return list;
    }
    if (list != NULL)
    {
        n = list->next;
        free(list);
        return n;
    }
    else
        return NULL;
}


  LIST *sortlist(LIST list)
  {
    LIST sorted;
    if (list !=NULL)
  }


void list_print(LIST list)
{
    if (list == NULL)
    {
        printf("list is empty\n");
    }
    while (list != NULL)
    {
        printf("score: %d\n", list->score);
        list = list->next;
    }
}

int main(void)
{
    LIST slist;
    int len = 5;
    int i, array[len];

    slist = new_list();

    for (i = 0; i < len; i++)
    {
        printf("Enter a score: ");
        scanf("%d", &array[i]);
        //printf("%d\n", array[i]);
        slist = list_add(slist, array[i]);
    }

    list_print(slist);

    return 0;
}

I dont know what to put in *sortlist..

How do I do it!? please help

What do you want to sort by? player_id? level? score?

You've got 2 choices:

* Sort after you've created the linked list
* Sort while you're creating the linked list

The general idea for the latter is (assuming smallest to biggest),

(each box represents a node, and the value inside is the value you're sorting by)

Code:

Inserting: [2, 5, 6, 3, 1]

insert 2:
 _
|2| -> NULL                      the first node goes at the front -- this is a sorted list
 -

insert 5:
 _      _
|2| -> |5| -> NULL               5 is greater than 2, so it goes after it (traverse and compare)
 -      -

insert 6:
 _      _      _
|2| -> |5| -> |6| -> NULL        6 is greater than 5 so it goes after it (ie the end)
 -      -      -

insert 3:
 _      _      _      _
|2| -> |3| -> |5| -> |6| -> NULL  3 is greater than 2 so it goes after it -- but less than 5, so it goes before 5
 -      -      -      -

insert 1:
 _      _      _      _      _
|1| -> |2| -> |3| -> |5| -> |6| -> NULL  1 is less than 2 so it goes before it
 -      -      -      -      -