using System;

​

public class Program

{

    public static void Main(String[] args)

    {    

        Console.WriteLine( NumberUtils.IsEven(0) );   // true      // even

        Console.WriteLine( NumberUtils.IsEven(1) );   // false

        Console.WriteLine( NumberUtils.IsEven(2) );   // true      // even

        Console.WriteLine( NumberUtils.IsEven(3) );   // false

        Console.WriteLine( NumberUtils.IsEven(4) );   // true      // even

        Console.WriteLine( NumberUtils.IsEven(5) );   // false

​

        Console.WriteLine( NumberUtils.IsEven(-1) );  // false

        Console.WriteLine( NumberUtils.IsEven(-2) );  // true      // even

        Console.WriteLine( NumberUtils.IsEven(-3) );  // false

        Console.WriteLine( NumberUtils.IsEven(-4) );  // true      // even

        Console.WriteLine( NumberUtils.IsEven(-5) );  // false

    }

}

​

public class NumberUtils

{

    public static bool IsEven(int number)

    {

        return (number & 1) == 0;

    }

}