using System;

​

public class Program

{

    public static void Main()

    {

        var evens = new EvensEvaluator();

        PrintNumbers(1, 100, evens);

    }

    static void PrintNumbers(int start, int end, IConditionEvaluator evaluator)

    {

        for(int i = start; i <= end; i++)

        {

            if(evaluator.EvaluateNumber(i))

            {

                Console.WriteLine(i);

            }

        }

    }

}

​

interface IConditionEvaluator

{

    bool EvaluateNumber(int number);

}

​

class EvensEvaluator : IConditionEvaluator

{

    public bool EvaluateNumber(int number)

    {

        return number % 2 == 0;

    }

}