add: constants exercises

10-constants/exercises/01-minutes-in-weeks/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
+
+// ---------------------------------------------------------
+// EXERCISE: Minutes in Weeks
+//
+//  Calculate how many minutes in two weeks.
+//
+//  STEPS:
+//  1. Declare `minsPerDay` constant and initialize it
+//     to the number of minutes in a day
+//
+//  2. Declare `weekDays` constant and initialize it
+//     to 7.
+//
+//  3. Use printf to print the total number of minutes
+//     in two weeks.
+//
+// EXPECTED OUTPUT
+//  There are 20160 minutes in 2 weeks.
+// ---------------------------------------------------------
+
+func main() {
+}