#include <iostream>

using namespace std;

class Rational {
  public:
    int num, den;

    double Convert();
    void Invert();
    void Print();
};

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

void Rational::Invert() {   //1/q
  int temp = num;
  num = den;
  den = temp;
}

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

int main() {
  Rational q;
  q.num = 22;
  q.den = 7;
  
  cout << "q = ";
  q.Print();
  cout << "  = " << q.Convert() << endl;
  q.Invert();
  cout << "1/q = ";
  q.Print();

  return 0;
}