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go/doc/progs/echo.go
Rob Pike 83f0b718ed fixups in the tutorial
also add a section about compiling programs because some found it surprising not to have one

R=rsc
CC=go-dev
http://go/go-review/1018011
2009-11-01 20:47:03 -08:00

33 lines
582 B
Go

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"os";
"flag"; // command line option parser
)
var n_flag = flag.Bool("n", false, "don't print final newline")
const (
Space = " ";
Newline = "\n";
)
func main() {
flag.Parse(); // Scans the arg list and sets up flags
var s string = "";
for i := 0; i < flag.NArg(); i++ {
if i > 0 {
s += Space
}
s += flag.Arg(i)
}
if !*n_flag {
s += Newline
}
os.Stdout.WriteString(s);
}