faktorial review

#include <conio.h>
#include <iostream>
#include <cstdlib>

using namespace std;

long faktorial(int n){
     if((n==0)||(n==1)){
            return 1;
                        }
     else {
          return n*faktorial(n-1);
          }
     }
int main ()
{
     cout<<"Program Menghitung Faktorial"<<endl;
     cout<<"============================"<<endl;
     long number1,number2,hasil;
     int pilih;
     cout<<"Masukkan Angka : ";
     cin>>number1;
     cout<<"Masukkan Angka : ";
     cin >> number2;
     cout<<"================================"<<endl;
     cout<<" "<<endl;
     cout<<"Pilih Proses yang Akan Dilakukan"<<endl;
     cout<<"================================="<<endl;
     cout<<"1. Penjumlahan Faktorial"<<endl;
     cout<<"2. Pengurangan Faktorial"<<endl;
     cout<<"3. Pembagian Faktorial"<<endl;
     cout<<"========================"<<endl;
     cout<<"Masukkan Pilihan : ";
     cin>>pilih;
     cout<<"========================"<<endl;
     switch (pilih) {
              case 1 :
                  hasil = faktorial(number1) + faktorial(number2);
                  cout <<number1<<"!"<<" + "<<number2<<"! = "<<hasil<<endl;
                  break;
              case 2 :
                  hasil = faktorial(number1) - faktorial(number2);
                  cout <<number1<<"!"<<" - "<<number2<<"! = "<<hasil<<endl;
                  break;
              case 3 :
                  hasil = faktorial(number1) / faktorial(number2);
                  cout<<number1<<"!"<<" / "<<number2<<"! = "<<hasil<<endl;
                  break;
                  }
     cout<<"****************************************************************"<<endl;
     return 0;
}