add: if statement exercises

11-if/exercises/06-odd-even/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: Odd or Even
+//
+//  1. Get a number from the command-line.
+//
+//  2. Find whether the number is odd, even and divisible by 8.
+//
+// RESTRICTION
+//  Handle the error. If the number is not a valid number,
+//  or it's not provided, let the user know.
+//
+// EXPECTED OUTPUT
+//  go run main.go 16
+//    16 is an even number and it's divisible by 8
+//
+//  go run main.go 4
+//    4 is an even number
+//
+//  go run main.go 3
+//    3 is an odd number
+//
+//  go run main.go
+//    Pick a number
+//
+//  go run main.go ABC
+//    "ABC" is not a number
+// ---------------------------------------------------------
+
+func main() {
+}