#include <iostream.h>
#include <conio.h>
#include <stdio.h>
#include <iomanip.h>
#include <string.h>
#include <fstream.h>

class lds{
      int n,b,r,key;
 lds * next;
 lds * prev;


 public:

	static lds * p;

		void insert();
		void output();
		void search();
		void add();
		void del();
		void save();
		void open();
	  };


 lds*lds::p;


 void lds::insert(){
    lds * q;

	
	clrscr();

       p=new lds;

	cout<<"How many alements? :";
	cin>>n;

	cout<<"Enter first element: ";
	     cin>>p->b;
	     q=p;


	 for(int i=2;i<=n;i++){
                

		cout<<"\nEnter "<<i<<" element: ";
		 cin>>p->b;
		p->next = NULL;
		p->prev = NULL;

		
	 }
            }


void lds::output(){
	int nk=0;
	lds *q;
	q=p;

	
	while(q!=NULL){
		nk++;
	

		

		cout<<nk<<"\n";

		cout<<q->b;
		q = q->next;

		
	}}




 void main(){
	lds obj;
        clrscr();
        int option;


        do{
	 cout<<"\nEnter action: ";
	  cin>>option;
               
		switch(option){
			case 1:
                 	  obj.insert();
			break;

			case 2:
			  obj.output();
			break;


			
			}
			
		}
		while(option!=9);

		}