Clean implementation of complex calculator

src/ComplexCalculator/Program.cs

@@ -6,6 +6,41 @@ class Program
     {
         static void Main(string[] args)
         {
+            Console.WriteLine("This program adds 2 complex numbers");
+            ComplexNumber c1 = new ComplexNumber
+            {
+                Real = ReadDouble("Enter Real Part of first complex number"),
+                Imaginary = ReadDouble("Enter Imaginary part of first complex number")
+            };
+            ComplexNumber c2 = new ComplexNumber
+            {
+                Real = ReadDouble("Enter Real Part of second complex number"),
+                Imaginary = ReadDouble("Enter Imaginary part of second complex number")
+            };
+
+            var c3 = c1.Add(c2);
+
+            Console.WriteLine("{0} + {1} = {2} with modulous {3}", c1, c2, c3, c3.Modulous());
+        }
+
+        private static double ReadDouble(string message)
+        {
+            double val;
+            string s;
+            bool success = false;
+            do
+            {
+                Console.Write(message + ":");
+                s = Console.ReadLine();
+                success = double.TryParse(s, out val);
+                if (!success)
+                {
+                    Console.WriteLine("ERROR please try again.");
+                }
+            } while (!success);
+
+            return val;
+
         }
     }
 }