How to print the values of a part of a linked list

This is a discussion on How to print the values of a part of a linked list within the C Programming forums, part of the General Programming Boards category; I'm learning how to use linked lists and can't figure out how to access the elements of the structure I ...

  1. #1
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    How to print the values of a part of a linked list

    I'm learning how to use linked lists and can't figure out how to access the elements of the structure I am currently pointing to with my *next pointer.

    Also, "next" isn't a keyword for these types of operations, is it?

    If anyone has an example of a linked list I could see I would be grateful.

    This is my code thus far (not very much):

    Code:
    struct list
    {
    struct list *ptrnext;
    char letter;
    int number;
    };
    We've been working on this for the last few hours, and none of our approaches are working, Any tips/tutorials please?

  2. #2
    and the Hat of Guessing tabstop's Avatar
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    So, when you build your linked list, one of the things you have to do (ok, the only thing you have to do) is make sure that the nextptr field of object A points to object B (and so on down the line).

  3. #3
    Registered User Phoenix_Rebirth's Avatar
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    Yeah, basically you have a head pointer and you continually add items. So when you add them you go to the last node in you list and assign to the ptrnext the address of the new node to be added while the new node just has NULL in it's field.

    Try this file if you want. I dont have comments but I think it 's pretty easy to figure out
    Attached Files Attached Files
    Last edited by Phoenix_Rebirth; 02-05-2009 at 08:09 AM.

  4. #4
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    here's an example of a linked list.
    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    struct node
    {
        char letter;
        struct node *next;
    };
    
    typedef struct node node;
    
    node *strtolist(char *s);
    
    int main()
    {
        node *list = strtolist("How to print the values of a part of a linked list");
        node *temp, *next;
        for (temp = list; temp; temp = next)
        {
            next = temp->next;
            putchar(temp->letter);
            free(temp);
        }
        putchar('\n');
        return EXIT_SUCCESS;
    }
    
    node *strtolist(char *s)
    {
        node *list = NULL;
        node *temp;
        for (; *s; s++)
        {
            if (!list)
            {
                list = malloc(sizeof(node));
                list->letter = *s;
                list->next = NULL;
            }
            else
            {
                for (temp = list; temp->next; temp = temp->next) ;
                temp->next = malloc(sizeof(node));
                temp->next->letter = *s;
                temp->next->next = NULL;
            }
        }
        return list;
    }

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