Refactor bank account and calculator code with improved comments and English translations

Csharp/Bankrekening/Program.cs

@@ -3,12 +3,14 @@ using System.Collections.Generic;
 using System.Drawing;
 using System.Windows.Forms;
 
+// Class representing a bank account
 class Bankrekening
 {
     public string Rekeningnummer { get; }
     private decimal saldo;
     private List<Transactie> transacties;
 
+    // Constructor to initialize account number and starting balance
     public Bankrekening(string rekeningnummer, decimal beginsaldo)
     {
         Rekeningnummer = rekeningnummer;
@@ -16,6 +18,7 @@ class Bankrekening
         transacties = new List<Transactie>();
     }
 
+    // Method to deposit money into the account with a description
     public void Storten(decimal bedrag, string beschrijving)
     {
         if (bedrag > 0)
@@ -25,10 +28,11 @@ class Bankrekening
         }
         else
         {
-            throw new ArgumentException("Het bedrag moet positief zijn.");
+            throw new ArgumentException("The amount must be positive.");
         }
     }
 
+    // Method to withdraw money from the account with a description
     public void Opnemen(decimal bedrag, string beschrijving)
     {
         if (bedrag > 0 && bedrag <= saldo)
@@ -38,27 +42,31 @@ class Bankrekening
         }
         else
         {
-            throw new ArgumentException("Onvoldoende saldo of ongeldig bedrag.");
+            throw new ArgumentException("Insufficient balance or invalid amount.");
         }
     }
 
+    // Method to check the current balance
     public decimal ControleerSaldo()
     {
         return saldo;
     }
 
+    // Method to get the transaction history
     public List<Transactie> GetTransactieGeschiedenis()
     {
         return transacties;
     }
 }
 
+// Class representing a transaction
 class Transactie
 {
     public decimal Bedrag { get; }
     public string Beschrijving { get; }
     public DateTime Datum { get; }
 
+    // Constructor to initialize transaction details
     public Transactie(decimal bedrag, string beschrijving)
     {
         Bedrag = bedrag;
@@ -67,6 +75,7 @@ class Transactie
     }
 }
 
+// Main form for the application
 public class MainForm : Form
 {
     private Bankrekening mijnRekening;
@@ -77,6 +86,7 @@ public class MainForm : Form
     private Button opnemenButton;
     private Button transactieGeschiedenisButton;
 
+    // Constructor to initialize the form and its controls
     public MainForm()
     {
         mijnRekening = new Bankrekening("NL01BANK0123456789", 1000);
@@ -101,7 +111,7 @@ public class MainForm : Form
             BackColor = Color.White,
             ForeColor = Color.Black,
             BorderStyle = BorderStyle.FixedSingle,
-            PlaceholderText = "Aantal"
+            PlaceholderText = "Amount"
         };
         beschrijvingTextBox = new TextBox() 
         { 
@@ -112,11 +122,11 @@ public class MainForm : Form
             BackColor = Color.White,
             ForeColor = Color.Black,
             BorderStyle = BorderStyle.FixedSingle,
-            PlaceholderText = "Beschrijving"
+            PlaceholderText = "Description"
         };
         stortenButton = new Button() 
         { 
-            Text = "Storten", 
+            Text = "Deposit", 
             Top = 140, 
             Left = 20,
             Width = 260,
@@ -128,7 +138,7 @@ public class MainForm : Form
         };
         opnemenButton = new Button() 
         { 
-            Text = "Opnemen", 
+            Text = "Withdraw", 
             Top = 200, 
             Left = 20,
             Width = 260,
@@ -140,7 +150,7 @@ public class MainForm : Form
         };
         transactieGeschiedenisButton = new Button() 
         { 
-            Text = "Transactiegeschiedenis", 
+            Text = "Transaction History", 
             Top = 260, 
             Left = 20,
             Width = 260,
@@ -162,12 +172,13 @@ public class MainForm : Form
         Controls.Add(opnemenButton);
         Controls.Add(transactieGeschiedenisButton);
 
-        Text = "Bankrekening Beheer";
+        Text = "Bank Account Management";
         Size = new Size(320, 380);
         StartPosition = FormStartPosition.CenterScreen;
         BackColor = Color.White;
     }
 
+    // Event handler for deposit button click
     private void StortenButton_Click(object sender, EventArgs e)
     {
         try
@@ -183,6 +194,7 @@ public class MainForm : Form
         }
     }
 
+    // Event handler for withdraw button click
     private void OpnemenButton_Click(object sender, EventArgs e)
     {
         try
@@ -198,11 +210,12 @@ public class MainForm : Form
         }
     }
 
+    // Event handler for transaction history button click
     private void TransactieGeschiedenisButton_Click(object sender, EventArgs e)
     {
         var transactieGeschiedenis = mijnRekening.GetTransactieGeschiedenis();
-        string geschiedenis = "Transactiegeschiedenis:\n";
+        string geschiedenis = "Transaction History:\n";
-        geschiedenis += "Datum\t\tBeschrijving\t\tBedrag\n";
+        geschiedenis += "Date\t\tDescription\t\tAmount\n";
         geschiedenis += "---------------------------------------------\n";
         foreach (var transactie in transactieGeschiedenis)
         {
@@ -212,6 +225,7 @@ public class MainForm : Form
     }
 }
 
+// Main program class
 class Program
 {
     static void Main()
@@ -220,7 +234,7 @@ class Program
         mijnRekening.Storten(100.00m, "Initial deposit");
         mijnRekening.Opnemen(50.00m, "ATM withdrawal");
 
-        Console.WriteLine("Transactiegeschiedenis:");
+        Console.WriteLine("Transaction History:");
         foreach (var transactie in mijnRekening.GetTransactieGeschiedenis())
         {
             Console.WriteLine($"{transactie.Datum}: {transactie.Beschrijving} - {transactie.Bedrag:C}");

Csharp/Calc/Program.cs

@@ -4,17 +4,21 @@ class Program
 {
     static void Main(string[] args)
     {
+        // Ask the user to enter the first number
         Console.WriteLine("Enter the first number:");
         double num1 = Convert.ToDouble(Console.ReadLine());
 
+        // Ask the user to enter an operator (+, -, *, /)
         Console.WriteLine("Enter an operator (+, -, *, /):");
         string op = Console.ReadLine();
 
+        // Ask the user to enter the second number
         Console.WriteLine("Enter the second number:");
         double num2 = Convert.ToDouble(Console.ReadLine());
 
         double result = 0;
 
+        // Perform the operation based on the entered operator
         switch (op)
         {
             case "+":
@@ -33,15 +37,18 @@ class Program
                 }
                 else
                 {
+                    // Display an error message if attempting to divide by zero
                     Console.WriteLine("Cannot divide by zero.");
                     return;
                 }
                 break;
             default:
+                // Display an error message if the entered operator is invalid
                 Console.WriteLine("Invalid operator.");
                 return;
         }
 
+        // Display the result of the calculation
         Console.WriteLine("The result is: " + result);
     }
 }

Csharp/Gokspel/Program.cs

@@ -16,31 +16,39 @@ class Program : Form
 
     public Program()
     {
+        // Initialize the random number to guess
         numberToGuess = random.Next(1, 101);
+
+        // Set up the form
         this.Text = "Gokspel";
         this.Size = new System.Drawing.Size(300, 200);
 
+        // Create and add the prompt label
         Label promptLabel = new Label();
         promptLabel.Text = "Raad het getal tussen 1 en 100:";
         promptLabel.Location = new System.Drawing.Point(10, 20);
         promptLabel.AutoSize = true;
         this.Controls.Add(promptLabel);
 
+        // Create and add the input box
         inputBox = new TextBox();
         inputBox.Location = new System.Drawing.Point(10, 50);
         this.Controls.Add(inputBox);
 
+        // Create and add the guess button
         guessButton = new Button();
         guessButton.Text = "Gok";
         guessButton.Location = new System.Drawing.Point(10, 80);
         guessButton.Click += new EventHandler(GuessButton_Click);
         this.Controls.Add(guessButton);
 
+        // Create and add the result label
         resultLabel = new Label();
         resultLabel.Location = new System.Drawing.Point(10, 110);
         resultLabel.AutoSize = true;
         this.Controls.Add(resultLabel);
 
+        // Create and add the restart button (initially hidden)
         restartButton = new Button();
         restartButton.Text = "Opnieuw";
         restartButton.Location = new System.Drawing.Point(10, 140);
@@ -48,6 +56,7 @@ class Program : Form
         restartButton.Visible = false;
         this.Controls.Add(restartButton);
 
+        // Set up the confetti timer
         confettiTimer = new System.Windows.Forms.Timer();
         confettiTimer.Interval = 30;
         confettiTimer.Tick += new EventHandler(ConfettiTimer_Tick);
@@ -60,38 +69,40 @@ class Program : Form
         {
             if (userGuess < numberToGuess)
             {
-                resultLabel.Text = "Te laag! Probeer opnieuw.";
+                resultLabel.Text = "Too low! Try again.";
             }
             else if (userGuess > numberToGuess)
             {
-                resultLabel.Text = "Te hoog! Probeer opnieuw.";
+                resultLabel.Text = "Too high! Try again.";
             }
             else
             {
-                resultLabel.Text = "Gefeliciteerd! Je hebt het juiste getal geraden.";
+                resultLabel.Text = "Congratulations! You guessed the correct number.";
                 StartConfetti();
-                restartButton.Visible = true;
+                restartButton.Visible = true; // Show the restart button
             }
         }
         else
         {
-            resultLabel.Text = "Ongeldige invoer. Voer een getal in.";
+            resultLabel.Text = "Invalid input. Please enter a number.";
         }
     }
 
     private void RestartButton_Click(object sender, EventArgs e)
     {
+        // Reset the game
         numberToGuess = random.Next(1, 101);
         resultLabel.Text = "";
         inputBox.Text = "";
         confettiList.Clear();
         confettiTimer.Stop();
-        restartButton.Visible = false;
+        restartButton.Visible = false; // Hide the restart button
         this.Invalidate();
     }
 
     private void StartConfetti()
     {
+        // Initialize confetti
         confettiList.Clear();
         for (int i = 0; i < 100; i++)
         {
@@ -102,6 +113,7 @@ class Program : Form
 
     private void ConfettiTimer_Tick(object sender, EventArgs e)
     {
+        // Update confetti positions
         for (int i = 0; i < confettiList.Count; i++)
         {
             confettiList[i].Update();
@@ -112,6 +124,7 @@ class Program : Form
     protected override void OnPaint(PaintEventArgs e)
     {
         base.OnPaint(e);
+        // Draw confetti
         foreach (var confetti in confettiList)
         {
             e.Graphics.FillEllipse(new SolidBrush(confetti.Color), confetti.Position.X, confetti.Position.Y, confetti.Size, confetti.Size);
@@ -136,6 +149,7 @@ class Confetti
 
     public Confetti(Random random, Size clientSize)
     {
+        // Initialize confetti properties
         Position = new PointF(random.Next(clientSize.Width), random.Next(clientSize.Height));
         SpeedY = (float)(random.NextDouble() * 2 + 1);
         SpeedX = (float)(random.NextDouble() * 2 - 1);
@@ -145,7 +159,8 @@ class Confetti
 
     public void Update()
     {
+        // Update confetti position and apply gravity
         Position = new PointF(Position.X + SpeedX, Position.Y + SpeedY);
-        SpeedY += 0.1f;
+        SpeedY += 0.1f; // gravity effect
     }
 }