using System;

​

public class MyProgram

{

    public static void Main(String[] args)

    {

        int largestValue;

        int lowestValue;

        int totalOfNumbers;

        totalOfNumbers = 0;

        int howManyNumbers;

        howManyNumbers = 0;

        int averageOfValues;

        int numEntered;

        Console.WriteLine("Enter a positive integer or a negative value to quit: ");

        input(out numEntered);

        largestValue = numEntered;

        lowestValue = numEntered;

        while (numEntered > -1)

        {

            if (numEntered > largestValue)

            {

                largestValue = numEntered;

            }

            if (numEntered < lowestValue)

            {

                lowestValue = numEntered;

            }

            howManyNumbers = howManyNumbers + 1;

            totalOfNumbers = totalOfNumbers + numEntered;

            Console.WriteLine("Enter a positive integer or a negative value to quit: ");

            input(out numEntered);

        }

        if (howManyNumbers > 0)

        {

            Console.WriteLine("Largest value entered: " + largestValue);

            Console.WriteLine("Smallest Value entered: " + lowestValue);

            Console.WriteLine("The average of the values: " + (double) totalOfNumbers / howManyNumbers);

        }

        else

        {

            Console.WriteLine("No numbers were entered");

        }

    }

    // .NET can only read single characters or entire lines from the console.

    // The following functions are designed to help input specific data types.

    private static void input(out double result)

    {

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

    }

    private static void input(out int result)

    {

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

    }

    private static void input(out Boolean result)

    {

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

    }

    private static void input(out string result)

    {

        result = Console.ReadLine();

    }

}

​