Implement stars game

82 Stars/csharp/Stars/Input.cs

@@ -0,0 +1,31 @@
+using System;
+
+namespace Stars
+{
+    internal static class Input
+    {
+        // Float, because that's what the BASIC input operation returns
+        internal static float GetNumber(string prompt)
+        {
+            Console.Write(prompt);
+
+            while (true)
+            {
+                var response = Console.ReadLine();
+                if (float.TryParse(response, out var value))
+                {
+                    return value;
+                }
+
+                Console.WriteLine("!Number expected - retry input line");
+                Console.Write("? ");
+            }
+        }
+
+        internal static string GetString(string prompt)
+        {
+            Console.Write(prompt);
+            return Console.ReadLine();
+        }
+    }
+}