add: constants exercises

10-constants/exercises/04-tau/solution/main.go

@@ -0,0 +1,19 @@
+// 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() {
+	const (
+		pi  = 3.14159265358979323846264
+		tau = pi * 2
+	)
+
+	fmt.Printf("tau = %g\n", tau)
+}