refactor: 6th section first two lectures exercises and questions

06-variables/02-declarations/exercises/04-string/solution/main.go

@@ -0,0 +1,15 @@
+// For more tutorials: https://blog.learngoprogramming.com
+//
+// Copyright © 2018 Inanc Gumus
+// Learn Go Programming Course
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+//
+
+package main
+
+import "fmt"
+
+func main() {
+	var s string
+	fmt.Printf("s (%T): %q\n", s, s)
+}