restructure: arrays and slices

16-slices/exercises/09-append-3-fix/main.go

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+package main
+
+// ---------------------------------------------------------
+// EXERCISE: Append #3 — Fix the problems
+//
+//  Fix the problems in the code below.
+//
+// BONUS
+//
+//  Simplify the code.
+//
+// EXPECTED OUTPUT
+//
+//  toppings: [black olives green peppers onions extra cheese]
+//
+// ---------------------------------------------------------
+
+func main() {
+	// toppings := []int{"black olives", "green peppers"}
+
+	// var pizza [3]string
+	// append(pizza, ...toppings)
+	// pizza = append(toppings, "onions")
+	// toppings = append(pizza, extra cheese)
+
+	// fmt.Printf("pizza       : %s\n", pizza)
+}

16-slices/exercises/09-append-3-fix/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
+
+import "fmt"
+
+func main() {
+	toppings := []string{"black olives", "green peppers"}
+
+	var pizza []string
+	pizza = append(pizza, toppings...)
+	pizza = append(pizza, "onions", "extra cheese")
+
+	fmt.Printf("toppings: %s\n", pizza)
+}