using System;

public class MathFunction

{

    public static double reciprocal(double num)

    {

        return 1/num;

    }

    public static double FractionalPart(double num)

    {

        return num-(int)num;

    }

    public static bool IsEven(int num)

    {

        return (num%2)==0?true:false;

    }

    public static bool IsOdd(int num)

    {

        return !IsEven(num);

    }

}

public class MainClass

{

    public static void Main(){

        Console.WriteLine("Reciprocal of 5 is {0}",MathFunction.reciprocal(10.0));

        Console.WriteLine("Fractional Part of 2.563 is {0} ",MathFunction.FractionalPart(2.563));

        if(MathFunction.IsEven(10))

           Console.WriteLine("10 is Even");

        if(MathFunction.IsOdd(5))

           Console.WriteLine("5 is odd");

    }

}