refactor: exercises for the first 4 sections

04-statements-expressions-comments/exercises/03-operators-combine/main.go

@@ -0,0 +1,26 @@
+// 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: Operators combine the expressions
+//
+//  Print the expected output below using the string
+//  concatenation operator.
+//
+// HINT
+//  Use + operator multiple times to create "Hello!!!?".
+//
+// EXPECTED OUTPUT
+//  "Hello!!!?"
+// ---------------------------------------------------------
+
+func main() {
+
+	// fmt.Println("Hello!" + ?)
+}