nodes

#include <iostream>
#include<conio.h>
#include <cstdlib>
using namespace std;

struct node
{
 int data;
 node *next;
}*start=NULL;


void create()
{
char ch;
 do
 {
  struct node *new_node,*current;

  new_node=new node;

  cout<<"Enter the data : ";
  cin>>new_node->data;
  new_node->next=NULL;

  if(start==NULL)
  {
  start=new_node;
  current=new_node;
  }
  else
  {
  current->next=new_node;
  current=new_node;
  }

  cout<<"Do you want to create another ? ";
  cout<< "( 1 = Yes , 0 = No )";
 ch=getche();
 }while(ch!='0');
}


int display()
{
struct node *new_node;
system("cls");
 cout<<"\nThe Linked List : "<<endl;
 new_node=start;
 while(new_node!=NULL)
   {
   cout<<"   "<<new_node->data;
   new_node=new_node->next;
   }
  cout<<"  NULL";
}

int main(){
    node *new_node,*current;

  int cmd = 0;
  while(cmd !=3){
             cout <<endl << "===================";
             cout << "\nSelect command: " <<endl ;
             cout << "[1] Create" <<endl;
             cout << "[2] Display"<<endl;
             cout << "Command No#: ";
             cin >>cmd ;

     switch(cmd){
     case 1:     new_node=new node;
                   cout<<"Enter the data : ";
                   cin>>new_node->data;
                   new_node->next=NULL;

                   if(start==NULL)
                   {
                   start=new_node;
                   current=new_node;
                   }
                   else
                   {
                   current->next=new_node;
                   current=new_node;
                   }

                   cout<<"Do you want to create another : "<<endl;
                   cout<< "( 1 = Yes , 0 = No ) : ";
                   cmd=getche();
                   if (0 == cmd) {
				{system("cls");
               cout<<"\nThe Linked List : "<<endl;
               new_node=start;
               while(new_node!=NULL)
      {        cout<<"   "<<new_node->data;
               new_node=new_node->next;
     }
                     cout<<"  NULL";
   }

			}
			else {
				new_node=new node;
                   cout<<"\nEnter the data : ";
                   cin>>new_node->data;
                   new_node->next=NULL;

                   if(start==NULL)
                   {
                   start=new_node;
                   current=new_node;
                   }
                   else
                   {
                   current->next=new_node;
                   current=new_node;
                   }

                   cout<<"Do you want to create another : "<<endl;
                   cout<< "( 1 = Yes , 0 = No ) : ";
                   cmd=getche();
			}
         break;

      case 2:
               {system("cls");
               cout<<"\nThe Linked List : "<<endl;
               new_node=start;
               while(new_node!=NULL)
      {        cout<<"   "<<new_node->data;
               new_node=new_node->next;
     }
                     cout<<"  NULL";
   }
          break;

 }
}




create();
display();
 system("pause>0");
}