Arrays in Dotnet framework

In the .NET Framework, arrays are a way to store multiple values of the same data type in a single variable. Arrays are fixed in size once declared.

Single-Dimensional Array:

using System;

class Program
{
    static void Main()
    {
        // Declare and initialize an array of integers
        int[] numbers = new int[5]; // Array of size 5

        // Assign values
        numbers[0] = 10;
        numbers[1] = 20;
        numbers[2] = 30;
        numbers[3] = 40;
        numbers[4] = 50;

        // Access and print array elements
        for (int i = 0; i < numbers.Length; i++)
        {
            Console.WriteLine("Element at index " + i + ": " + numbers[i]);
        }
    }
}

Multi-Dimensional Array:

int[,] matrix = new int[2, 3]
{
    { 1, 2, 3 },
    { 4, 5, 6 }
};

for (int i = 0; i < 2; i++)
{
    for (int j = 0; j < 3; j++)
    {
        Console.Write(matrix[i, j] + " ");
    }
    Console.WriteLine();
}

Jagged Array (Array of Arrays):

int[][] jaggedArray = new int[3][];
jaggedArray[0] = new int[] { 1, 2 };
jaggedArray[1] = new int[] { 3, 4, 5 };
jaggedArray[2] = new int[] { 6 };

for (int i = 0; i < jaggedArray.Length; i++)
{
    for (int j = 0; j < jaggedArray[i].Length; j++)
    {
        Console.Write(jaggedArray[i][j] + " ");
    }
    Console.WriteLine();
}

Initializing an Array Directly:

string[] fruits = { "Apple", "Banana", "Cherry" };

foreach (string fruit in fruits)
{
    Console.WriteLine(fruit);
}