deploy: 06a1bdf735

vendor/gopl.io/ch2/echo4/main.go

@@ -0,0 +1,27 @@
+// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
+// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
+
+// See page 33.
+//!+
+
+// Echo4 prints its command-line arguments.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"strings"
+)
+
+var n = flag.Bool("n", false, "omit trailing newline")
+var sep = flag.String("s", " ", "separator")
+
+func main() {
+	flag.Parse()
+	fmt.Print(strings.Join(flag.Args(), *sep))
+	if !*n {
+		fmt.Println()
+	}
+}
+
+//!-