refactor: variables/assignment exercises and questions

06-variables/04-assignment/exercises/04-find-the-rectangle-area/solution/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
+
+import "fmt"
+
+func main() {
+	var (
+		length        int
+		width, height = 5, 6
+	)
+
+	// first calculates: (width + height)
+	// then            :  multiplies it with 2
+
+	// just like in math
+
+	length = 2 * (width + height)
+
+	fmt.Println(length)
+}