using System;

​

public class MyProgram

{

    public static void Main(string[] args)

    {

        int lastInputValue;

        lastInputValue = 0;

        int sum;

        sum = 0;

        int count;

        count = 0;

        int @inputValue;

        int highValue;

        highValue = 0;

        int lowValue;

        lowValue = 0;

        output("Enter a positive integer or a negative value to quit: " + "\n");

        @inputValue = (int) inputValue();

        count = count + 1;

        sum = sum + @inputValue;

        while (@inputValue > 0)

        {

            if (@inputValue > lastInputValue)

            {

                lastInputValue = highValue;

            }

            if (@inputValue < lastInputValue)

            {

                lastInputValue = lowValue;

            }

            output("Enter a positive integer or a negative value to quit: " + "\n");

            @inputValue = (int) inputValue();

            if (@inputValue >= 0)

            {

                count = count + 1;

                sum = sum + @inputValue;

            }

        }

        if (count != 0)

        {

            int average;

            average = sum / count;

            output(average + "\n");

            output("Largest value entered: " + highValue + "\n");

            output("Smallest value entered: " + lowValue + "\n");

            output("The average of the values: " + average + "\n");

        }

        else

        {

            output("No numbers were entered." + "\n");

        }

    }

​

    private static double inputValue()

    {

        double result;

        while (!double.TryParse(Console.ReadLine(), out result));

        return result;

    }

    private static string inputText()

    {

        return Console.ReadLine();

    }

    private static void output(string text)

    {

        Console.WriteLine(text);

    }

}

​