refactor: organize exercises and questions for the 5th section

05-write-your-first-library-package/exercise/solution/golang/cmd/main.go

@@ -0,0 +1,18 @@
+// 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" // You should replace this with your username
+
+	"github.com/inancgumus/learngo/05-write-your-first-library-package/printer-exercise/solution/golang"
+)
+
+func main() {
+	fmt.Println(golang.Version())
+}

05-write-your-first-library-package/exercise/solution/golang/go.go

@@ -0,0 +1,17 @@
+// 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 golang
+
+import (
+	"runtime"
+)
+
+// Version returns the current Go version
+func Version() string {
+	return runtime.Version()
+}