using System; using System.IO; class Program { static void Main() { // Prompt for patient information until the user enters 999 to quit while (true) { Console.Write("Enter patient ID number or 999 to quit >> "); string patientId = Console.ReadLine(); if (patientId == "999") break; Console.Write("Enter last name >> "); string lastName = Console.ReadLine(); Console.Write("Enter balance >> "); decimal balance; while (!decimal.TryParse(Console.ReadLine(), out balance)) { Console.WriteLine("Invalid input. Please enter a valid balance."); } // Create a Patient object and write the data to the file Patient patient = new Patient(patientId, lastName, balance); WritePatientRecord(patient); } Console.WriteLine("Patient records saved to Patients.txt"); } static void WritePatientRecord(Patient patient) { // Open the file in append mode or create it if it doesn't exist using (StreamWriter writer = File.AppendText("Patients.txt")) { // Write the patient data in the specified format writer.WriteLine($"{patient.Id}, {patient.LastName}, {patient.Balance}"); } } } class Patient { public string Id { get; } public string LastName { get; } public decimal Balance { get; } public Patient(string id, string lastName, decimal balance) { Id = id; LastName = lastName; Balance = balance; } } Can someone explain how can this C# code write the output of this program to a file called “Patients.txt”. Do i have to create a text file called “Patients” first? OR what should I do. The information below might help explain what im trying to say

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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using System; using System.IO; class Program { static void Main() { // Prompt for patient information until the user enters 999 to quit while (true) { Console.Write("Enter patient ID number or 999 to quit >> "); string patientId = Console.ReadLine(); if (patientId == "999") break; Console.Write("Enter last name >> "); string lastName = Console.ReadLine(); Console.Write("Enter balance >> "); decimal balance; while (!decimal.TryParse(Console.ReadLine(), out balance)) { Console.WriteLine("Invalid input. Please enter a valid balance."); } // Create a Patient object and write the data to the file Patient patient = new Patient(patientId, lastName, balance); WritePatientRecord(patient); } Console.WriteLine("Patient records saved to Patients.txt"); } static void WritePatientRecord(Patient patient) { // Open the file in append mode or create it if it doesn't exist using (StreamWriter writer = File.AppendText("Patients.txt")) { // Write the patient data in the specified format writer.WriteLine($"{patient.Id}, {patient.LastName}, {patient.Balance}"); } } } class Patient { public string Id { get; } public string LastName { get; } public decimal Balance { get; } public Patient(string id, string lastName, decimal balance) { Id = id; LastName = lastName; Balance = balance; } }

Can someone explain how can this C# code write the output of this program to a file called “Patients.txt”. Do i have to create a text file called “Patients” first? OR what should I do.

The information below might help explain what im trying to say

14-3a) Write the program WritePatient Records that allows a doctor's staff to enter data about patients and
saves the data to a file called Patients.txt. The output should be in the following format: p#, PATIENT_NAME,
BALANCE. Create a Patient class that contains fields for ID number, name, and current balance owed to the
doctor's office.
Save the contents of your output file as you will use them in the subsequent labs.
An example of the program is shown below:
Enter patient ID number or 999 to quit >> PID24584521
Enter last name >> White
Enter balance >> 200
Enter next patient ID number or 999 to quit >> PID98512456
Enter last name >> Pink
Enter balance >> 450
Enter next patient ID number or 999 to quit >> PID21578345
Enter last name >> Brown
Enter balance >> 1000
Enter next patient ID number or 999 to quit >> PID74315491
Enter last name >> Blue
Enter balance >> 650
Enter next patient ID number or 999 to quit >> 999
And the contents of the Patients.txt file:
PID24584521,White, 200
PID98512456, Pink, 450
PID21578345, Brown, 1000
PID74315491, Blue, 650

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