refactor: 6th section first two lectures exercises and questions

06-variables/02-declarations/exercises/11-wrong-doer/main.go

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+// 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
+
+// ---------------------------------------------------------
+// EXERCISE: Wrong doer
+//
+//  1. Print a variable
+//
+//  2. Then declare it
+//  (This means: Try to print it before its declaration)
+//
+//  3. Observe the error
+// ---------------------------------------------------------
+
+func main() {
+	// First print it:
+	// fmt.Println(?)
+
+	// Then declare it:
+	// var ? ?
+}

06-variables/02-declarations/exercises/11-wrong-doer/solution/main.go

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+// 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
+
+func main() {
+	// UNCOMMENT THE CODE BELOW TO SEE THE ERROR
+
+	// fmt.Println(age)
+	// var age int
+}