Thread: linked lists

I have this prototype:
struct node{
struct lnode *next;
int id;
char *name,*address;
char **phones;
}
the exercise says that the user must be able to create
categories of linked lists
i.e. a category that manages information with a symbolic name family,
another with name friends and so on...
How can i write source code for creating various of linked lists and also give them symbolic names for later access?

Sorry guys i didnt write any source code because i dont know how to start ....Any help plz

I cant use this tip because the user must be able to create categories and give symbolic names not me.....

For it to be a linked list you have to have

Code:

struct somename {
  struct *somename next;
  /* Other info */
}

Thats how you move from one node to the next. If there is other information they need then it can be put in there also. But you have to have a pointer to the next item in the list.

Code:

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



struct lnode{
struct lnode *next;
int id; 
char *name,*address;
char **phone;
};

/* twith pointer nextCategory we can browse the categories
i.e. family,freinds..
with pointer categSearch we can search the elements of
each category(basicaly with this pointer we can search
the linked list of each category)
*/


struct LinkLists{
struct LinkLists *nextCategory;
struct LinkLists *categSearch;
char *categName;
}


void createCategory(struct LinkLists **headRef,char *catgName);

int main (void){
char *category;
char buffer[81];
struct LinkLists *head=NULL;
	
	
	printf("Give a category name to continue:\n");
	printf("If you want to stop give an empty line.\n");
	
	do{
	scanf("%s",buffer);
	category=(char *)malloc((strlen(buffer)+1)*sizeof(char));
	if(!category){
		fprintf(stderr,"Unable to allocate memory");
		exit(1);
		}
                      createCategory(&head,category);
	 }while(buffer[0]!='\n');	
		
	
return 0;
}


void createCategory(struct LinkLists **headRef,char *catgName)
{
	struct LinkLists *new;
	struct LinkLists *current=*headRef;
	struct LinkLists *prev;
	new=(struct LinkLists *)malloc(sizeof(struct LinkLists ));
	if(!new){
		fprintf(stderr,"Unable to allocate memory");
		exit(1);
		}
		
	if(*headRef==NULL){
	new->nextCategory=*headRef;
	*headRef=new;
	new->categName=catgName;
	}
	else{
	
	while(current!=NULL){
	prev=current;
	current=current->nextCategory;
	}
	prev->nextCategory=new;
	new=current;
	new->categName=catgName;
	}
}

where is the problem? i take errors: two or more data types in declaration of `createCategory',
conflicting types for `createCategory.

Code:

struct LinkLists{
struct LinkLists *nextCategory;
struct LinkLists *categSearch;
char *categName;
}

Should be

Code:

struct LinkLists{
struct LinkLists *nextCategory;
struct LinkLists *categSearch;
char *categName;
};