Two Dimensional Array As Buffer For Screen - C# Programming Exercise

using System;  // Importing the System namespace for accessing Console and Random

class Program
{
    static void Main()
    {
        // Declare a 70x20 two-dimensional array to represent the screen buffer
        char[,] screenBuffer = new char[20, 70];  // 20 rows and 70 columns

        // Fill the screen buffer with empty spaces initially
        for (int row = 0; row < screenBuffer.GetLength(0); row++)
        {
            for (int col = 0; col < screenBuffer.GetLength(1); col++)
            {
                screenBuffer[row, col] = ' ';  // Filling the array with empty spaces
            }
        }

        // Create an instance of Random to generate random positions for the letters
        Random rand = new Random();

        // Draw 80 random 'X' characters in random positions on the screen buffer
        for (int i = 0; i < 80; i++)
        {
            int row = rand.Next(0, 20);  // Random row between 0 and 19
            int col = rand.Next(0, 70);  // Random column between 0 and 69

            screenBuffer[row, col] = 'X';  // Place 'X' in the randomly chosen position
        }

        // Display the content of the screen buffer (the array)
        for (int row = 0; row < screenBuffer.GetLength(0); row++)
        {
            for (int col = 0; col < screenBuffer.GetLength(1); col++)
            {
                Console.Write(screenBuffer[row, col]);  // Print each character in the array
            }
            Console.WriteLine();  // Move to the next line after each row is printed
        }
    }
}