using System.ComponentModel.DataAnnotations;

internal class Program
{


    public static double EnterMeasurement() // function for validating a number and ensuring data has been entered
    {
        double UserInput; // defines the UserInput integer
        do // defines the start of the do while loop
        {
            try // tries the code and let's it run
            {

                UserInput = double.Parse(Console.ReadLine()); // takes the users input and converts it into an integer using parse
                if (UserInput <= 0) // checks if user input is less than or equal to 0
                {
                    Console.WriteLine("Error, please enter a number greater than 0"); // outputs minimum user input to user
                }
                else
                {
                    break; // breaks out of loop
                }
            }
            catch (FormatException) // performs the code in the event that a format exception has occurred, aka data that shouldn't be entered
            {
                Console.WriteLine("Error, unsuitable data entered. Please enter valid data"); // informs the user they have entered unsuitable data
            }

        } while (true); // will continuously perform the do while loop until a break has been reached

        return UserInput;
    }



    public static double PackageVolume(double a, double b, double c) // creates a function that uses 3 variables
    {
        double Volume = 0; // sets volume to 0
        Volume = a * b * c; // sets volume to a * b * c
        return Volume; // returns volume to call
    }

    private static void Main(string[] args)
    {

        double Length = 0; // initialises length to 0
        double Width = 0; // initialises width to 0
        double Height = 0; // initialises height to 0


        Console.WriteLine("Please enter the length"); // asks for length
        Length = Math.Round(EnterMeasurement(), 2); // sets length to entermeasurement method and rounds it
        Console.WriteLine("Please enter the width");
        Width = Math.Round(EnterMeasurement(), 2); // sets width to entermeasurement method and rounds it
        Console.WriteLine("Please enter the height");
        Height = Math.Round(EnterMeasurement(), 2); // sets height to entermeasurement method and rounds it


        Console.WriteLine("The values you have entered are (Length, Width, Height) : " + Length + ", " + Width + ", " + Height + " rounded to 2 decimal places"); // outputs length width and height to user
        Console.WriteLine("The volume of the package is " + Math.Round(PackageVolume(Length, Width, Height), 2)); // outputs rounded package volume to user
    }
}