add: new input scanning exercises

23-input-scanning/exercises/05-quit/main.go

@@ -0,0 +1,32 @@
+package main
+
+// ---------------------------------------------------------
+// EXERCISE: Quit
+//
+//  Create a program that quits when a user types the
+//  same word twice.
+//
+//
+// RESTRICTION
+//
+//  The program should work case insensitive.
+//
+//
+// EXPECTED OUTPUT
+//
+//  go run main.go
+//
+//   hey
+//   HEY
+//   TWICE!
+//
+//  go run main.go
+//
+//   hey
+//   hi
+//   HEY
+//   TWICE!
+// ---------------------------------------------------------
+
+func main() {
+}