#include <iostream>
#include <conio.h>
using namespace std;
void clear();
void pressAnyKey();
struct node
 {
    int data;
    node*next;
 };
    node*head=NULL;
    node*create_node(int x)
 {
    node*newnode=new node;
    newnode->data=x;
    newnode->next=NULL;
    return newnode;
 }
 void insert_beg(int x)
 {

 node*newnode=create_node(x);
 {
     if(head==NULL)
     {
         head=newnode;
         return ;
     }
     else
     {
         newnode->next=head;
         head=newnode;
     }
 }
 }
 void display()
  {
     node*temp=head;
     if(head==NULL)
     {
         cout<<"list is empty";
         return;
     }
     while(temp!=NULL)
     {
         cout<<temp->data<<"\n";
         temp=temp->next;
     }
  }
     void insert_last(int x)
     {
         node*newnode=create_node(x);
         node*temp=head;
         while(temp->next!=NULL)
            temp=temp->next;
         temp->next=newnode;
     }



int main()
{
    int ch;


    while(true){
    clear();
    cout<<" list "<<endl;
    cout<<" 1-begain "<<endl;
    cout<<" 2-display "<<endl;
        cin>>ch;
        switch (ch)
        {
        case 1:
             clear();
            int x;
            cout<<"enter"<<endl;
            cin>>x;
            insert_beg(x);
            break;
        case 2:
             clear();
            display();
            break;
        default:
                clear();
                cout<<"invalid choice\n";
        }
        pressAnyKey();
    }
    return 0;
}

void clear(){
     system("cls") ;
}

void pressAnyKey(){
     cout<<"\n\n\n press any key to back to main menu...\n\n";
     getch();
}