gopl-zh.github.com/vendor/gopl.io/ch2/echo4/main.go

28 lines
454 B
Go
Raw Normal View History

2015-12-09 07:57:17 +00:00
// 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()
}
}
//!-