using System;

​

public class MyProgram

{

    public static void Main(String[] args)

    {

        int high;

        int low;

        int num1;

        int total;

        int count;

        int average;

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

        input(out num1);

        high = num1;

        low = num1;

        total = num1;

        count = 0;

        while (num1 >= 0)

        {

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

            input(out num1);

            if (num1 > high)

            {

                high = num1;

                total = total + num1;

            }

            else

            {

                if (num1 < low && num1 >= 0)

                {

                    low = num1;

                    total = total + num1;

                }

            }

            count = count + 1;

        }

        if (count > 0)

        {

            average = (int) ((double) total / count);

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

            Console.WriteLine(" Smallest value entered: " + low);

            Console.WriteLine("Average: " + average);

        }

        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();

    }

}

​