using System;

public class Program

{

    public static void Main()

    {

        // Q1: Create an int Array with the first few digits of the number 𝜋: 3,1,4,1,5,9

        int[] pi = new int[6] {3, 1, 4, 1, 5, 9};

        // Print the 3rd element of the array. (Hint: the index starts from 0)

        Console.WriteLine("pi[{0}] is {1}", 2, pi[2]);

        // Print the length of an array.

        Console.WriteLine("pi.Length is {0}", pi.Length);

        // Print the upper bound of an array.

        Console.WriteLine("pi.GetUpperBound(0) is {0}", pi.GetUpperBound(0));

        // Sort this array and print the 3rd element.

        Array.Sort(pi);

        Console.WriteLine("pi[{0}] is {1}", 2, pi[2]);

        // Please set up the value for these 12 months ("Jan" to "Dec").

        string[] month = new string[12] {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

        // Ask the user to type a number in the range from 1 to 12.

        Console.WriteLine("Month (1-12)? ");

        int i = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine(month[i - 1]); // Array index starts from 0, so subtract 1

    }

}

​

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