Add Scoreboard abstraction

07_Basketball/csharp/IReadWriteExtensions.cs

@@ -0,0 +1,28 @@
+using Games.Common.IO;
+
+namespace Basketball;
+
+internal static class IReadWriteExtensions
+{
+    public static float ReadDefense(this IReadWrite io, string prompt)
+    {
+        while (true)
+        {
+            var defense = io.ReadNumber(prompt);
+            if (defense >= 6) { return defense; }
+        }
+    }
+
+    public static int ReadShot(this IReadWrite io, string prompt)
+    {
+        while (true)
+        {
+            var shot = io.ReadNumber(prompt);
+            if ((int)shot == shot && shot >= 0 && shot <= 4) { return (int)shot; }
+            io.Write("Incorrect answer.  Retype it. ");
+        }
+    }
+
+    public static void WriteScore(this IReadWrite io, string format, string opponent, Dictionary<string ,int> score) =>
+        io.WriteLine(format, "Dartmouth", score["Dartmouth"], opponent, score[opponent]);
+}