Adding assignments

Payment/CreditCardPayment.cs

@@ -0,0 +1,12 @@
+namespace OOP.Payment
+{
+    public class CreditCardPayment : GenericPayment
+    {
+        public string CardNumber { get; set; }
+
+        public override void ProcessPayment()
+        {
+            Console.WriteLine($"Processing credit card");
+        }
+    }
+}

Payment/PayPalPayment.cs

@@ -0,0 +1,12 @@
+namespace OOP.Payment
+{
+    public class PayPalPayment : GenericPayment
+    {
+        public string email { get; set; }
+
+        public override void ProcessPayment()
+        {
+            Console.WriteLine("Processing PayPal");
+        }
+    }
+}

Payment/Payment.cs

@@ -0,0 +1,13 @@
+namespace OOP.Payment
+{
+    public class GenericPayment
+    {
+        public int amount { get; set; }
+        public string Currency { get; set; }
+
+        public virtual void ProcessPayment()
+        {
+            Console.WriteLine("Processing generic payment");
+        }
+    }
+}