using System;

public class Program

{

    public static void Main()

    {

        // Part 1: Working with the first digits of Pi

        // 1. Create an int array with the first digits of Pi

        int[] pi = new int[] { 3, 1, 4, 1, 5, 9 };

        // 2. Print out the 3rd element (index 2)

        Console.WriteLine("pi [2] = " + pi[2]);

​

        // 3. Print the length of the array

        Console.WriteLine("pi.Length = " + pi.Length);

​

        // 4. Print the upper bound of the array (highest index)

        Console.WriteLine("pi. UpperBound (0) = " + pi.GetUpperBound(0));

​

        // 5. Sort the array

        Array.Sort(pi);

​

        // Print sorted array for clarity

        Console.WriteLine("Sorted pi array:");

        foreach (var num in pi)

        {

            Console.Write(num + " ");

        }

        Console.WriteLine();

​

        // Print the 3rd element (index 2) of the sorted array

        Console.WriteLine("pi [2] " + pi[2]);

​

        // Part 2: Working with the months array

​

        // 1. Create a string array with the names of the 12 months

        string[] months = new string[]

        {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

​

        // 2. Ask the user to input a number between 1 and 12

        Console.Write("Enter a number between 1 and 12 to get the corresponding month: ");

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

​

        // 3. Print the corresponding month

        if (monthNumber >= 1 && monthNumber <= 12)

        {

            Console.WriteLine("The corresponding month is: " + months[monthNumber - 1]);

        }

        else

        {

            Console.WriteLine("Invalid input. Please enter a number between 1 and 12.");

        }

​

        // Print some additional information for months array

        Console.WriteLine("months.Length = " + months.Length);

        Console.WriteLine("Upper bound of months = " + months.GetUpperBound(0));

​

        // For multi-dimensional array example (optional part, similar to the example provided)

        int[,] iScores = new int[3, 4];

        iScores[0, 2] = 98;

        iScores[2, 3] = 82;

        Console.WriteLine("Upper bound of iScores (dimension 0) = " + iScores.GetUpperBound(0));

        Console.WriteLine("Upper bound of iScores (dimension 1) = " + iScores.GetUpperBound(1));

    }

}

​

​