Anyone can help ? the error is "[error] iostream.h: no such file or directory"

#include <iostream.h> 
#include <conio.h> 
#include <stdio.h>
#include <stdlib.h>

int pil; void pilih(); 
void buat_baru(); 
void tambah_belakang(); 
void tambah_depan(); 
void hapus_belakang(); 
void hapus_depan(); 
void tampil(); 

struct node 
{
     char nama [20];
     int umur;
     float tinggi;
     node *prev, *next;
}; 

node *baru, *head=NULL, *tail=NULL,*hapus,*bantu; 

void main()
 {
     do
     {
         clrscr();
         cout<<"MENU DOUBLE LINKEDLIST"<<endl;
 cout<<"1.="" tambah="" depan"<<endl;
="" cout<<"2.="" belakang"<<endl;
="" cout<<"3.="" hapus="" cout<<"4.="" cout<<"5.="" tampilkan"<<endl;
="" cout<<"6.="" selesai"<<endl;
="" cout<<"pilihan="" anda="" :="" ";
="" cin="">>pil;
         pilih();
     }
 while(pil!=6);
 } 

void pilih()
 {
     if(pil==1)
         tambah_depan();
     else if(pil==2)
         tambah_belakang();
     else if(pil==3)
         hapus_depan();
     else if(pil==4)
         hapus_belakang();
     else if(pil==5)
         tampil();
     else
         cout<<"selesai";
 } 

void buat_baru() 
{   
     baru = new(node);
     cout<<"input nama     : ";cin>>baru->nama;
     cout<<"input umur     : ";cin>>baru->umur;
     cout<<"input tinggi   : ";cin>>baru->tinggi;
     baru->prev=NULL;
     baru->next=NULL; 
} 

void tambah_belakang() 
{
     buat_baru();
     if(head==NULL)
      {
         head=baru;
         tail=baru;
      }
     else
     {
         tail->next=baru;
         baru->prev=tail;
         tail=baru;
     }
     cout<<endl<<endl;
 tampil();
}="" 

void="" tambah_depan()
="" {
="" buat_baru();
="" if(head="=NULL)
" head="baru;
" tail="baru;
" }
="" else
="" baru-="">next=head;
         head->prev=baru;
         head=baru;
     }
     cout<<endl<<endl;
 tampil();
="" }="" 

void="" hapus_depan()
="" {
="" if="" (head="=NULL)
" cout<<"kosong";
="" else="" (head-="">next==NULL)
     {
       hapus=head;
       head=NULL;
       tail=NULL;
       delete hapus;
     }
     else
     {
         hapus=head;
         head=hapus->next;
         head->prev=NULL;
         delete hapus;
     }
     cout<<endl<<endl;
 tampil();
="" }="" 

void="" hapus_belakang()
="" {
="" if="" (head="=NULL)
" cout<<"kosong";
="" else="" (head-="">next==NULL)
     {
       hapus=head;
       head=NULL;
       tail=NULL;
       delete hapus;
     }
     else
     {
      hapus=tail;
      tail=hapus->prev;
      tail->next=NULL;
      delete hapus; 
     }
     cout<<endl<<endl;
 tampil();
}="" 

void="" tampil()
="" {
="" if="" (head="=NULL)
" cout<<"kosong";
="" else
="" bantu="head;
" while(bantu!="NULL)
" cout<<"="" nama="" :="" "<<bantu-="">nama;
             cout<<"  umur   : "<<bantu->umur;
             cout<<"  tinggi : "<<bantu->tinggi<<endl;
 bantu="bantu-">next;
          }
      }
      getch();
}

What I have tried:

<pre>#include <iostream> 
#include <conio.h> 
#include <stdio.h>
#include <stdlib.h>

using namespace std;

int pil; void pilih(); 
void buat_baru(); 
void tambah_belakang(); 
void tambah_depan(); 
void hapus_belakang(); 
void hapus_depan(); 
void tampil(); 

struct node 
{
     char nama [20];
     int umur;
     float tinggi;
     node *prev, *next;
}; 

node *baru, *head=NULL, *tail=NULL,*hapus,*bantu; 

void main()
 {
     do
     {
         clrscr();
         cout<<"MENU DOUBLE LINKEDLIST"<<endl;
 cout<<"1.="" tambah="" depan"<<endl;
="" cout<<"2.="" belakang"<<endl;
="" cout<<"3.="" hapus="" cout<<"4.="" cout<<"5.="" tampilkan"<<endl;
="" cout<<"6.="" selesai"<<endl;
="" cout<<"pilihan="" anda="" :="" ";
="" cin="">>pil;
         pilih();
     }
 while(pil!=6);
 } 

void pilih()
 {
     if(pil==1)
         tambah_depan();
     else if(pil==2)
         tambah_belakang();
     else if(pil==3)
         hapus_depan();
     else if(pil==4)
         hapus_belakang();
     else if(pil==5)
         tampil();
     else
         cout<<"selesai";
 } 

void buat_baru() 
{   
     baru = new(node);
     cout<<"input nama     : ";cin>>baru->nama;
     cout<<"input umur     : ";cin>>baru->umur;
     cout<<"input tinggi   : ";cin>>baru->tinggi;
     baru->prev=NULL;
     baru->next=NULL; 
} 

void tambah_belakang() 
{
     buat_baru();
     if(head==NULL)
      {
         head=baru;
         tail=baru;
      }
     else
     {
         tail->next=baru;
         baru->prev=tail;
         tail=baru;
     }
     cout<<endl<<endl;
 tampil();
}="" 

void="" tambah_depan()
="" {
="" buat_baru();
="" if(head="=NULL)
" head="baru;
" tail="baru;
" }
="" else
="" baru-="">next=head;
         head->prev=baru;
         head=baru;
     }
     cout<<endl<<endl;
 tampil();
="" }="" 

void="" hapus_depan()
="" {
="" if="" (head="=NULL)
" cout<<"kosong";
="" else="" (head-="">next==NULL)
     {
       hapus=head;
       head=NULL;
       tail=NULL;
       delete hapus;
     }
     else
     {
         hapus=head;
         head=hapus->next;
         head->prev=NULL;
         delete hapus;
     }
     cout<<endl<<endl;
 tampil();
="" }="" 

void="" hapus_belakang()
="" {
="" if="" (head="=NULL)
" cout<<"kosong";
="" else="" (head-="">next==NULL)
     {
       hapus=head;
       head=NULL;
       tail=NULL;
       delete hapus;
     }
     else
     {
      hapus=tail;
      tail=hapus->prev;
      tail->next=NULL;
      delete hapus; 
     }
     cout<<endl<<endl;
 tampil();
}="" 

void="" tampil()
="" {
="" if="" (head="=NULL)
" cout<<"kosong";
="" else
="" bantu="head;
" while(bantu!="NULL)
" cout<<"="" nama="" :="" "<<bantu-="">nama;
             cout<<"  umur   : "<<bantu->umur;
             cout<<"  tinggi : "<<bantu->tinggi<<endl;
 bantu="bantu-">next;
          }
      }
      getch();
}

//Still have error at void main - do - clrscr()
//[Error] '::main' must return 'int'
//In function 'int main()
//[Error] 'clrscr' was not declared in this scope