#include <iostream>

class Fraction {
public:
  Fraction();
  Fraction(int n);
  Fraction(int n, int d);
  void SetNumerator(int n);
  void SetDenominator(int d);
  double ToDecimal();
private:
  int numer;
  int denom;
};

Fraction::Fraction()
{
  numer = 0;
  denom = 1;
}

Fraction::Fraction(int n)
{
  numer = n;
  denom = 1;
}

Fraction::Fraction(int n, int d)
{
  numer = n;
  denom = d;
}

void Fraction::SetNumerator(int n) {
  numer = n; /* notice we are accessing
                private member numer
		here. */
}

void Fraction::SetDenominator(int d) {
  if(d != 0)
    denom = d;
  else
    denom = 1;
}

double Fraction::ToDecimal() {
  return (double) numer / denom; /* integer division */
}

int main() {
  Fraction F;

  /* F.numer = 1; */
  F.SetNumerator(1);
  F.SetDenominator(2);

  std::cout<<"Decimal: "<<F.ToDecimal()<<std::endl;

  Fraction A;
  std::cout<<"Decimal: "<<A.ToDecimal()<<std::endl;

  Fraction B(10);
  std::cout<<"Decimal: "<<B.ToDecimal()<<std::endl;

  Fraction C(10, 20);
  std::cout<<"Decimal: "<<C.ToDecimal()<<std::endl;

  return 0;
}