using System;

public class Program

{

   class Numerator

    {

        public Numerator() { }

        public Numerator(double numerator)

        {

            this.numerator = numerator;

        }

        public void set_numerator(double numerator)

        {

            this.numerator = numerator;

        }

        public double get_numerator()

        {

            return this.numerator;

        }

        private double numerator;

    }

    class Denumerator

    {

        public Denumerator() { }

        public Denumerator(double denumerator)

        {

            this.denumerator = denumerator;

        }

        public void set_denumerator(double denumerator)

        {

            this.denumerator= denumerator;

        }

        public double get_denumerator()

        {

            return this.denumerator;

        }

        private double denumerator;

    }

    class Function

    {

        public Function(Numerator numerator, Denumerator denumerator)

        {

            this.numerator = new Numerator();

            this.denumerator = new Denumerator();

            this.numerator.set_numerator(numerator.get_numerator());

            this.denumerator.set_denumerator(denumerator.get_denumerator());

        }

        public void set_function(Numerator num, Denumerator den) 

        {

            this.numerator.set_numerator(num.get_numerator());

            this.denumerator.set_denumerator(den.get_denumerator());

        }

        public double get_res() {

            return res;

        }

        public void countRes()

        {

            this.res = numerator.get_numerator() / denumerator.get_denumerator();

        }

​

        private Numerator numerator;

        private Denumerator denumerator;

        private double res;

    }

  public static void Main()

  {

      Numerator num = new Numerator(2.3);

            Denumerator den = new Denumerator(4);

            Function func = new Function(num, den);

            try

            {

                func.countRes();

                Console.WriteLine(func.get_res());

            }

            catch

            {

                Console.WriteLine("\nException!\n");

            }

  }

}