#include <iostream>

using namespace std;

class Rational {
  public:
    void Assign(int n, int d);

    double Convert();
    void Invert();
    void Print();
    
  private:
    int num;
    int den;
};

void Rational::Assign(int n, int d) {
  num = n;
  den = d;
}

double Rational::Convert() {
  return double(num)/double(den);
}

void Rational::Invert() { 
  int temp = num;
  num = den;
  den = temp;
}

void Rational::Print() {
  cout << num << "/" << den  << endl;
}

int main() {
  Rational q;
  q.Assign(22,7);   //appel a la fonction d'access     

  cout << "q = ";
  q.Print();
  cout << "  = " << q.Convert() << endl;
  q.Invert();
  cout << "1/q = ";
  q.Print();

  return 0;
}