05. Month Printer

using System;

namespace MonthPrinter
{
    class Program
    {
        static void Main(string[] args)
        {
            int num = int.Parse(Console.ReadLine());
            string print = "";

            switch (num)
            {
                case 1:
                    print = "January";
                    break;
                case 2:
                    print = "February";
                    break;
                case 3:
                    print = "March";
                    break;
                case 4:
                    print = "April";
                    break;
                case 5:
                    print = "May";
                    break;
                case 6:
                    print = "June";
                    break;
                case 7:
                    print = "July";
                    break;
                case 8:
                    print = "August";
                    break;
                case 9:
                    print = "September";
                    break;
                case 10:
                    print = "October";
                    break;
                case 11:
                    print = "November";
                    break;
                case 12:
                    print = "December";
                    break;
                default:
                    print = "Error!";
                    break;
            }

            Console.WriteLine(print);
        }
    }
}



With array and ternary operator:

using System;

namespace MonthPrinter
{
    class Program
    {
        static void Main()
        {
            string[] month = { "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

            int num = int.Parse(Console.ReadLine());

            Console.WriteLine(num < 13 && num > 0 ? month[--num] : "Error!");
        }
    }
}