// editor5
#include<sdtio.h>
#include<stdlib.h>
typedef struct node{
   int data;
   struct node*next;
   
}Node;
Node *head=NULL *tail;
void create(int num){
    Node* newNode(Node*)malloc(1*sizeof(Node));
    newNode->data=num;
    newNode-next=NULL;
    if(head==NULL){
        head=newNode;
        tail=newNode;
    }
    else{
        tail->next=newNode;
        tail=newNode;
    }
}
void display(){
    node*itr;
    for(itr=head;itr!NULL;itr=itr->next){
        printf("%d",itr->data);
    }
}
void insertion(int val,int pos,int size){
    
}
Node* newNode(Node*)malloc(1*sizeof(Node));
    newNode->data=val;
    newNode-next=NULL;
    if(pos==1){
        newNode->next=head;
        head=newNode;
    }
    if(size+1 ==pos){
        tail->next=newNode;
        tail=newNode;
    }else{
        int cnt=1;
        Node*itr=head;
        while(1){
            if(cnt+1==pos){
                newNode->next=itr->next;
                itr->next=newNode;
                break;
            }
            itr=itr->next;
            cnt++;
            }
        }
        
    }
    int main()