add: numbers and strings exercises

08-numbers-and-strings/01-numbers/exercises/05-manipulate-a-counter/solution/main.go

@@ -0,0 +1,23 @@
+// 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 counter int
+
+	counter++
+	counter--
+
+	counter += 5
+	counter *= 10
+	counter /= 5
+
+	fmt.Println(counter)
+}