add: for statement loop exercises

13-loops/exercises/04-only-evens/main.go

@@ -0,0 +1,30 @@
+// 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: Only evens
+//
+//  1. Extend the "Sum up to N" exercise
+//  2. Sum only the even numbers
+//
+// RESTRICTIONS
+//  Skip odd numbers using the `continue` statement
+//
+// EXPECTED OUTPUT
+//  Let's suppose that the user runs it like this:
+//
+//    go run main.go 1 10
+//
+//  Then it should print:
+//
+//    2 + 4 + 6 + 8 + 10 = 30
+// ---------------------------------------------------------
+
+func main() {
+}