internal class Program
{

    public static Double ValidationDouble() // Method for validating a double and ensuring data has been entered
    {
        Double UserInput; // defines the UserInput double
        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 a double using parse
                if (UserInput <= 0)
                {
                    Console.WriteLine("Please enter a number above 0");
                }
                else
                {
                    break;
                }
            }
            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;
    }



    private static void Main(string[] args)
    {
        int a = 5; // defines a as 5, used to define the length of the array

        double[] Rainfall = new double[a]; // creates the array rainfall using doubles with the length set as "a"
        int DayCounter = 1; // initialises daycounter used for accurately recording and displaying each days rainfall
        double TotalRainfall = 0; // initialises totalrainfall
        double AverageRainfall = 0; // initialises averagerainfall


        for (int Counter = 0; Counter < a; Counter++) // performs the for loop while the counter  is less than a
        {
            Console.WriteLine("Please enter day " + DayCounter + "'s rainfall"); // asks user for input while displaying daycounter
            Rainfall[Counter] = ValidationDouble(); // performs validationdouble method on current rainfall day
            DayCounter++; // adds 1 to daycounter
        }


        for (int Counter = 0; Counter < Rainfall.Length; Counter++) // performs for loop while counter is less than rainfall array length
        {
            Console.WriteLine(Rainfall[Counter]); // prints the rainfall day it is currently on
            TotalRainfall = TotalRainfall + Rainfall[Counter]; // adds current rainfall day to totalrainfall 
        }

        TotalRainfall = Math.Round(TotalRainfall, 2); // rounds total rainfall to 2 decimal places
        AverageRainfall = TotalRainfall / Rainfall.Length; // divides totalrainfall by length of array to figure out average rainfall
        AverageRainfall = Math.Round(AverageRainfall, 2); // rounds average railfall to 2 decimal places
        Console.WriteLine("The total rainfall is " + TotalRainfall + " rounded to 2 decimal places"); // outputs total rainfall
        Console.WriteLine("The average rainfall is " + AverageRainfall + " rounded to 2 decimal places"); // outputs average rainfall
        Console.ReadKey(); // waits for input to close program


    }
}