deret fibonanci

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

using namespace std;
class Deret{
      friend ostream& operator<<(ostream&, Deret&);
      friend istream& operator>>(istream&, Deret&);
public :
       long fibonacci(int);
private :
        int n;
};

int fibonacci(int n){
    if((n == 1)|| (n == 2)) return (1);
    else return(fibonacci(n - 1) + fibonacci(n - 2));
}

ostream& operator<<(ostream& out, Deret& a){
         for(int i = 1; i < a.n; i++)
                 out<<fibonacci(i)<<" ";
         return out;
}

istream& operator>>(istream& in, Deret& a){
         cout<<"Sampai suku ke : ";
         in>>a.n;
         return in;
}
     
int main(int argc, char *argv[])
{
    Deret run;
    cin>>run;
    cout<<run;
    system("PAUSE");
    return EXIT_SUCCESS;
}