using System;

​

public class Program

{

    public static void Main()

    {

        int x = 0;

        for (int i = 0; i < 5; i++)

        {

            x = i * 2;

            Console.Write("i=");

            Console.WriteLine(i);

            Console.Write("x=");

            Console.WriteLine(x);

        }

    }

}