using System;

​

public class Program

{

    public static void Main()

    { 

        int total = 0;

​

        Console.WriteLine("Enter integer number:");

        string input = Console.ReadLine();

        var number = Convert.ToInt32(input);

        Console.WriteLine();

        for(int i = 1; i <= number; i++)

        {

            Console.WriteLine(i);

            total = total + i;

        }

        double average = total / (double)number;

        Console.WriteLine();

        Console.WriteLine("Average is  {0}.", average);

        Console.ReadLine();

​

    }

}

​