Muchos números y suma Ejercicio C# - Curso de Programación C# (C Sharp)

using System;  // Import the System namespace for basic functionality

class Program  // Define the main class
{
    static void Main()  // The entry point of the program
    {
        double sum = 0;  // Variable to store the sum of the numbers
        string input;  // Variable to store user input
        string numbersEntered = "";  // String to store the entered numbers
        
        // Prompt user for numbers until they enter "end"
        Console.WriteLine("Enter numbers (type 'end' to stop):");
        
        // Continue looping until user enters "end"
        while (true)
        {
            Console.Write("Enter a number: ");
            input = Console.ReadLine();  // Read user input
            
            if (input.ToLower() == "end")  // Check if input is "end"
                break;  // Exit the loop if "end" is entered
            
            // Try to convert the input to a double and add it to the sum
            if (double.TryParse(input, out double number))
            {
                sum += number;  // Add the number to the sum
                numbersEntered += number + " ";  // Append the number to the list of entered numbers
                Console.WriteLine($"Sum = {sum}");  // Display the current sum
            }
            else
            {
                Console.WriteLine("Invalid input. Please enter a valid number.");
            }
        }

        // Display the entered numbers and the total sum once "end" is entered
        Console.WriteLine($"The numbers are: {numbersEntered.Trim()}");
        Console.WriteLine($"The sum is: {sum}");
    }
}