///insert after nth position
#include <stdio.h>
#include <stdlib.h>

struct node
{
    int data;
    struct node *next;
};

int main()
{
    struct node *prev,*head,*p;
    int n,i;
    scanf("%d",&n);
    head=NULL;
    for(i=0;i<n;i++)
    {
        p=(struct node*)malloc(sizeof(struct node));
        scanf("%d",&p->data);
        p->next=NULL;
        if(head==NULL){
            head=p;
        }
        else{
            prev->next=p;
        }
        prev=p;
    }
    struct node* ptr;
    ptr=head;

    int pos,dat;
    printf("Enter position and data");
    scanf("%d %d",&pos,&dat);
    i=0;

    while(ptr!=NULL){
        ++i;
        if(i==pos){
            p=(struct node*)malloc(sizeof(struct node));
            p->data=dat;
            p->next=ptr->next;
            ptr->next=p;
            break;
        }
        ptr=ptr->next;
    }

    ptr=head;

    while(ptr!=NULL)
    {
        printf("data : %d\n",ptr->data);
        ptr=ptr->next;
    }
    return 0;
}