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how do i label a linked list?

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Join Date: Nov 2006

Posts: 224

Reputation: bugmenot is an unknown quantity at this point

Solved Threads: 31

bugmenot

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Posting Whiz in Training

how do i label a linked list?

Dec 7th, 2007

Hi, I have a linked list which I created in a function? I want to allow the user to enter a name for the linked list, and then after he/she can display the list by typing in the title. This is part of my code

 Help with Code Tags 
 C Syntax (Toggle Plain Text) 
struct llistt{
char str[100];  // where the strings will be kept
struct llistt *next
struct llistt *prev
}
 
typedef struct llistt node
struct llistt{
char str[100];  // where the strings will be kept
struct llistt *next
struct llistt *prev
}

typedef struct llistt node

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Join Date: Sep 2004

Posts: 7,660

Reputation: Narue has a reputation beyond repute

Solved Threads: 724

Narue

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Code Goddess

Re: how do i label a linked list?

Dec 7th, 2007

Right now your list consists only of nodes. If you want data that applies to the list as a whole, you should create a new structure that contains a list as well as that data:

 Help with Code Tags 
 c Syntax (Toggle Plain Text) 
struct node {
  char str[100];  // where the strings will be kept
  struct node *next
  struct node *prev
};
 
struct list {
  char name[100];
  struct node *head;
};
 
typedef struct node node;
typedef struct list list;
struct node {
  char str[100];  // where the strings will be kept
  struct node *next
  struct node *prev
};

struct list {
  char name[100];
  struct node *head;
};

typedef struct node node;
typedef struct list list;

Then you use it the same way, just instead of arbitrary pointers for the head of the list, you store it in a list object.