refactor: variables/assignment exercises and questions

06-variables/04-assignment/exercises/02-vars-to-vars/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: Variables To Variables
+//
+//  1. Change the value of `color` variable to "dark green"
+//
+//  2. Do not assign "dark green" to `color` directly
+//
+//     Instead, use the `color` variable again
+//     while assigning to `color`
+//
+//  3. Print it
+//
+// RESTRICTIONS
+//  WRONG ANSWER, DO NOT DO THIS:
+//  `color = "dark green"`
+//
+// HINT
+//  + operator can concatenate string values
+//
+//  Example:
+//
+//  "h" + "e" + "y" returns "hey"
+//
+// EXPECTED OUTPUT
+//  dark green
+// ---------------------------------------------------------
+
+func main() {
+	// DON'T TOUCH THIS
+
+	// color := "green"
+
+	// ADD YOUR CODE BELOW
+
+	// ?
+
+	// UNCOMMENT THE CODE BELOW TO PRINT THE VARIABLE
+
+	// fmt.Println(color)
+}