5.6 fibonanci

• menghitung fibonanci sampai  suku ke n
• cpp
  

  #include <iostream>
  #include <conio.h>
  using namespace std;
  class Operator {
      friend ostream& operator<<(ostream&, Operator&);
      friend istream& operator>>(istream&, Operator&);
      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, Operator& a) {
      for (int i = 1; i <= a.n; i++)
          out << fibonacci(i) << " ";
      return out;
      }
  istream& operator>>(istream& in, Operator& a) {
      cout << "Sampai suku ke : ";
      in >> a.n;
      return in;
  }
  main() {
      Operator run;
      cin >> run;
      cout << run;
      getch();
  }