Thread: WIP Borland C Doubly linked list

Heres a good start.....

Code:

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

typedef struct Rec
{
        char *name;
        int prc;
        int col;
}Record;

typedef struct node
{
        Record r;
        struct node *previous;
        struct node *next;
}Node;

typedef struct list
{
        Node *head;
        Node *tail;
}List;


List *CreateList()
{
     List *l = calloc(1, sizeof(List));
     if(l == NULL)
          return NULL;
      else
      {
          l->head = NULL;
          l->tail = NULL;
          
          return l;
      }
}
Node *CreateNode(char *name, int Prc, int Col)
{
     Node *n = calloc(1, sizeof(Node));
     if(n == NULL)
          return NULL;
     else
     {
         n->next = NULL;
         n->previous = NULL;
         
         if(name == NULL)
         {
                 free(n);
                 return NULL;
         }
         else
         {
             //You may use strdup here.
             /*n->r.name = strdup(name);*/
             //Init.
             n->r.name = malloc((strlen(name) + 1) * sizeof(char));
             strncpy(n->r.name, name, strlen(name));
             n->r.name[strlen(name)] = '\0';
             n->r.prc = Prc;
             n->r.col = Col;
             //Return the node.
             return n;
         }
     }
}
//Add a new node to the end of the list
int AddNode(List *l, char *Nname, int Prc, int Col)
{
    if(l == NULL)
         return -1;
    if(Nname == NULL)
         return -2;
    Node *n = CreateNode(Nname, Prc, Col);
    if(n)
    {
         if(l->head == NULL)
                    l->head = l->tail = n;
         else
         {
             n->previous = l->tail;
             l->tail->next = n;
             l->tail = n;
         }
         return 0;
    }
    else
        return -3;
}
void PrintList(List *l)
{
     Node *temp = l->head;
     printf("Printing List:\n");
     while(temp)
     {
                printf("%s\t%d\t%d\n", temp->r.name, temp->r.prc, temp->r.col);
                temp = temp->next;
     }
}
int main(int argc, char *argv[])
{
  
  List *l = CreateList();
  AddNode(l, "Nick", 24,45);
  AddNode(l, "Tom", 26,85);
  AddNode(l, "Snow", 56,42);
  PrintList(l);
  system("PAUSE");	
  return 0;
}