good good study, day day up!

vendor/gopl.io/ch1/echo3/main.go

@@ -0,0 +1,20 @@
+// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+
+// See page 8.
+
+// Echo3 prints its command-line arguments.
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+//!+
+func main() {
+	fmt.Println(strings.Join(os.Args[1:], " "))
+}
+
+//!-