diff --git a/gradebook/src/GradeBook/Program.cs b/gradebook/src/GradeBook/Program.cs
index 9ac665c..935521e 100644
--- a/gradebook/src/GradeBook/Program.cs
+++ b/gradebook/src/GradeBook/Program.cs
@@ -8,15 +8,34 @@ namespace GradeBook
         static void Main(string[] args)
         {
 
-            var book = new Book("Scott's Grade Book");
-            book.AddGrade(89.1);
-            book.AddGrade(90.5);
-            book.AddGrade(87.2);
-            
+            // var book = new Book("Scott's Grade Book");
+            // book.AddGrade(89.1);
+            // book.AddGrade(90.5);
+            // book.AddGrade(87.2);
+
+            var book = new Book("Jason's Grade Book");
+            string input;
+
+            bool if_continue = true;
+            while (if_continue)
+            {
+                Console.WriteLine("Give input: ");
+                input = Console.ReadLine();
+                if (input == "Q" || input == "q")
+                {
+                    Console.WriteLine("Receiving termination signal; Termiate program");
+                    break;
+                } else
+                {
+                    Console.WriteLine($"Received: {input}");
+                    book.AddGrade(Convert.ToDouble(input));
+                }
+            }
+
             var stats = book.GetStatistics();
 
             Console.WriteLine($"The lowest grade is {stats.lowGrade}");
-            Console.WriteLine($"The highest grade is {stats.highGrade}");
+            Console.WriteLine($"The highesst grade is {stats.highGrade}");
             Console.WriteLine($"The average grade is {stats.Average:N1}");
         }
     }