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insertionordered.c
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#include<stdio.h>
#include<stdlib.h>
struct node
{
int data;
struct node*llink;
struct node*rlink;
};
struct node *start,*temp,*ptr;
void data_call()
{
temp = (struct node*)malloc(sizeof(struct node*));
printf("Enter data: ");
scanf("%d",&temp->data);
temp->llink=temp->rlink=NULL;
}
void insert_order()
{
data_call();
if(start==NULL)
{
start=temp;
}
else if(temp->data<start->data)
{
temp->rlink=start;
start->llink=temp;
start=temp;
}
else
{
ptr=start;
while(ptr->rlink!=NULL && ptr->data<temp->data)
{
ptr=ptr->rlink;
}
if(ptr->rlink==NULL&&ptr->data<temp->data)
{
temp->llink=ptr;
ptr->rlink=temp;
}
else
{
temp->rlink=ptr;
ptr->llink->rlink=temp;
temp->llink=ptr->llink;
ptr->llink=temp;
}
}
}
void display()
{
ptr=start;
while(ptr!=NULL)
{
printf("%d ",ptr->data);
ptr=ptr->rlink;
}
}
void main()
{ int ch;
while(1)
{
printf("\n1.insert\n2.display\n3.exit\nEnter choice: ");
scanf("%d",&ch);
switch(ch)
{
case 1:insert_order();
break;
case 2:display();
break;
case 3:exit(0);
break;
default:printf("Wrong input");break;
}
}
}