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PROGRAM TO DELETE FROM END IN DOUBLY LINKED LIST

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/**************************************************/
/*PROGRAM TO DELETE FROM END IN DOUBLY LINKED LIST*/
/**************************************************/

#include < stdio.h>
#include < conio.h>
#include < malloc.h>
#include < process.h>
#include < ctype.h>

struct doubly_list
{
    int info;
    struct doubly_list *prev;
    struct doubly_list *next;
}*first,*last,*newnode,*ptr;

void main()
{
    int item,i;
    char ch;
    clrscr();
    newnode=(struct doubly_list*)malloc(sizeof(struct doubly_list));
    first=newnode;
    last=newnode;
    newnode->prev=NULL;
    do
    {
        printf("\nEnter data: ");
        scanf("%d",&item);
        newnode->info=item;
        printf("\nDo you want to create another node:(y/n)");
        fflush(stdin);
        scanf("%c",&ch);
        if(tolower(ch)=='y')
        {
            newnode->next=(struct doubly_list*)malloc(sizeof(struct doubly_list));
            newnode->next->prev=newnode;
            newnode=newnode->next;
            last=newnode;
        }
        else
        {
            newnode->next=NULL;
        }
    }while(tolower(ch)!='n');
    printf(“\nDoubly Linked List is:”);
    ptr=first;
    i=1;
    while(ptr!=NULL)
    {
        printf("\nNode %d : %d",i,ptr->info);
        ptr=ptr->next;
        i++;
    }

    last=last->prev;
    last->next=NULL;
    if(last==NULL)
    {
        first=NULL;
    }

printf(“\nAfter deletion Doubly Linked List is:”);
    ptr=first;
    i=1;
    while(ptr!=NULL)
    {
        printf("\nNode %d : %d",i,ptr->info);
        ptr=ptr->next;
        i++;
    }
    getch();
}
 

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Author:
Rohit kakria
I am software developer
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