#include<iostream.h>
#include<stdlib.h>
#include<conio.h>
#include<stdio.h>
struct node{
 int x;
 char h[50]; //last name
 char fn[10];
 struct node *next;
 };
 typedef node nd;
 nd *head, *p, *display, *search, *update, *pointer;
 void insert(int num/**, char name*/)
 {
    // p=p->next;
  nd * temp;
  temp=(nd*)malloc(sizeof(nd));
  temp->x=num;
  char lname[50];// last name
  char fname[50];// first name
  cout << "Last Name: ";
  cin >>lname;
  for( int a=0;a<sizeof(lname) ;a++)
  {
  temp->h[a]=lname[a];
  }
  cout << "First Name: ";
  cin >> fname;
  for( int b=0;b<sizeof(fname) ;b++)
  {
  temp->fn[b]=fname[b];
  }
  //p->next=temp;
    // p=p->next;
 
  if(head==NULL)
  {
   head=temp;
   p=head;
   display=p;
   search=p;
   update=p;
   display=update;
   pointer=temp;
  }
  else
  {
   p->next = temp;
   p=p->next;
   display=p;
   search=p;
   update=p;
   display=update;
   pointer=temp;
  }
 }
 void search_emp( int ID_search)
 {
   search->next=NULL;
     search=head;
     //p=head;
     //while(p!=NULL)
     while(search!=NULL)
     {
     if( ID_search==search->x)
      {
      cout << "\nID number: " << search->x;
      cout << "\nLast Name: " << search->h;
      cout << "\nFirst Name: " << search->fn;
      // search=search->next;
      }
     else if( ID_search == NULL )
      {
      cout << " No ID Found!!! ";
      break;
      }
       search=search->next;
     }
   }
   void update_emp( int profile )
   {
   clrscr();
   int ans;
   do{
   int new_ID;
   char new_lname[50];
    update->next=NULL;
     update=head;
     //p=head;
     //while(p!=NULL)
     while(update!=NULL)
     {
     if( profile==update->x)
      {
      cout << "-----------------------------------------------------------\n";
      cout << "                       UPDATE EXISTING FILE                \n";
      cout << "-----------------------------------------------------------\n";
      cout << "\nID number: " << update->x;
      cout << "\nLast Name: " << update->h;
      cout << "\nFirst Name: " << update->fn;
      }
        update=update->next;
   cout << "\nChoose what to update:\n";
   cout << "[1] ID Number\n";
   cout << "[2] Last Name\n";
   cout << "[3] First name\n";
   cout << "[4] Update Again?";
   cout << "[5] Exit\n";
   cout << "Enter Task : ";
   cin >>  ans;
   if( ans==1)
   {
    cout << "Enter new ID number: ";
    cin >> new_ID;
    update=pointer;
    update->x=new_ID;
   }
   else if( ans==2)
   {
       cout << " Enter new Last Name : ";
       cin >>new_lname;
       for( int a=0;a<sizeof(new_lname) ;a++)
       {
         update->h[a]=new_lname[a];
         update=pointer;
         update->h[a]=new_lname[a];
       }
   }
    }
    }
    while(ans==4);
    }
 
 void deleteNode(int num)
 {   p=p->next;
  nd *temp;
  p=head;
  if(head->x == num)
  {
   temp=head;
   head=head->next;
   p=head;
   free(temp);
  }
  else
  {
   while(p!=NULL)
   {
    if(p->next->x == num)
    {
     cout << "Value to Delete: " << p->next->x;
     temp = p->next;
     p->next= p->next->next;
     free(temp);
     break;
    }
    else{
     p=p->next;
      }
    }
   }
   p=head;
   while(p!=NULL)
   {
    cout << p->next;
    p=p->next;
   }
  }
  void main()
  {
   clrscr();
   int val, select, ID, update_pro;
   char nm;
   char choice;
   do{
    cout << "Selecte an Operation:\n";
    cout << "[1] Insert value\n";
    cout << "[2] View List\n";
    cout << "[3] Delete node\n";
    cout << "[4] Searche Employee\n";
    cout << "[5] Update existing\n";
    cout << "Enter choice:";
    cin >> select;
    if(select == 1)
    {
     cout << "\nEnter ID number:";
     cin >> val;
      // cout << "Enter Name:";
      // cin >> nm;
     insert(val/**,nm*/);
    }
    else if( select == 2)
    {
     //p->next=NULL;
     display->next=NULL;
     display=head;
     //p=head;
     //while(p!=NULL)
     while(display!=NULL)
     {
      cout << "\nID number: " << display->x;
      cout << "\nLast Name: " << display->h;
      cout << "\nFirst Name: " << display->fn;
        display=display->next;
     }
    }
    else if( select == 3)
    {
     cout << " Enter ID number to be deleted: ";
     cin >> val;
     deleteNode(val);
    }
    else if( select == 4)
    {
     cout << "\nSearch by ID Number:";
     cin >> ID;
     search_emp(ID);
    }
    else if( select == 5)
    {
     cout << "Enter Employee ID Number to update Profile: ";
     cin >> update_pro;
     update_emp(update_pro);
    }
    cout << " \nDo You Want to continue?:";
    cin >> choice;
   }while(choice == 'y');
  }

fprintf(stdprn,"Hello World\n");