Appending to a text file C# Exercise - C# Programming Course

// Importing necessary namespaces to handle input/output functionalities
using System;
using System.IO;

public class Program
{
    public static void Main()
    {
        // Informing the user about the functionality of the program
        Console.WriteLine("Enter sentences (press Enter on an empty line to finish):");

        // Initializing a StreamWriter to append data to "sentences.txt" without overwriting
        using (StreamWriter writer = new StreamWriter("sentences.txt", append: true))
        {
            // Infinite loop to continuously gather sentences from the user
            while (true)
            {
                // Reading a sentence from the user's input
                string sentence = Console.ReadLine();

                // Checking if the input is empty to end the input gathering process
                if (string.IsNullOrEmpty(sentence))
                    break;  // Exiting the loop if no sentence is entered

                // Writing the user's sentence to the file, appending it to the end
                writer.WriteLine(sentence);
            }
        }

        // Informing the user that the sentences have been appended to the file
        Console.WriteLine("Sentences appended to sentences.txt.");
    }
}