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10-constants/exercises/08/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
+
+import "fmt"
+
+// ---------------------------------------------------------
+// EXERCISE
+//  1. Initialize multiple constants using iota.
+//  2. Please follow the instructions inside the code.
+//
+// EXPECTED OUTPUT
+//  1 2 3
+// ---------------------------------------------------------
+
+func main() {
+	// HINT: This is a valid constant declaration
+	//       Blank-Identifier can be used in place of a name
+	const _ = iota
+	//    ^- this is just a name
+
+	// Now, use iota and initialize the following constants
+	// "automatically" to 1, 2, and 3 respectively.
+	const (
+		Jan = iota
+		Feb
+		Mar
+	)
+
+	// This should print: 1 2 3
+	// Not: 0 1 2
+	fmt.Println(Jan, Feb, Mar)
+}