mirror of
https://github.com/gopl-zh/gopl-zh.github.com.git
synced 2024-11-16 19:33:47 +00:00
25 lines
399 B
Go
25 lines
399 B
Go
|
// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
|
||
|
|
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
|
||
|
|
|
||
|
|
// See page 181.
|
||
|
|
|
||
|
|
// Tempflag prints the value of its -temp (temperature) flag.
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"flag"
|
||
|
|
"fmt"
|
||
|
|
|
||
|
|
"gopl.io/ch7/tempconv"
|
||
|
|
)
|
||
|
|
|
||
|
|
//!+
|
||
|
|
var temp = tempconv.CelsiusFlag("temp", 20.0, "the temperature")
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
flag.Parse()
|
||
|
|
fmt.Println(*temp)
|
||
|
|
}
|
||
|
|
|
||
|
|
//!-
|