gopl-zh.github.com/vendor/gopl.io/ch7/tempflag/tempflag.go

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// 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)
}
//!-