Seasons

// Seasons program

using System;

class Submission
{
    // -------------------------
    // Subprograms
    // -------------------------
    static string seasons(string month)
    {
        switch (month)
        {
            case "December":
            case "January":
            case "February":
                return "Winter";

            case "March":
            case "April":
            case "May":
                return "Spring";

            case "June":
            case "July":
            case "August":
                return "Summer";

            case "September":
            case "October":
            case "November":
                return "Autumn";

            default:
                return "Error";
        }
    }


    // -------------------------
    // Main program
    // -------------------------
    public static void Main(string[] args)
    {
        Console.WriteLine("Enter the month:");
        string month = Console.ReadLine();
        string season = seasons(month);
        Console.WriteLine($"Month {month} is in the {season}");
    }
}
You can submit as many times as you like. Only your latest submission will be taken into account.