mirror of
https://github.com/gopl-zh/gopl-zh.github.com.git
synced 2024-11-15 02:43:48 +00:00
33 lines
602 B
Go
33 lines
602 B
Go
|
// Copyright © 2016 Alan A. A. Donovan & Brian W. Kernighan.
|
||
|
|
// License: https://creativecommons.org/licenses/by-nc-sa/4.0/
|
||
|
|
|
||
|
|
// See page 43.
|
||
|
|
//!+
|
||
|
|
|
||
|
|
// Cf converts its numeric argument to Celsius and Fahrenheit.
|
||
|
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"strconv"
|
||
|
|
|
||
|
|
"gopl.io/ch2/tempconv"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
for _, arg := range os.Args[1:] {
|
||
|
|
t, err := strconv.ParseFloat(arg, 64)
|
||
|
|
if err != nil {
|
||
|
|
fmt.Fprintf(os.Stderr, "cf: %v\n", err)
|
||
|
|
os.Exit(1)
|
||
|
|
}
|
||
|
|
f := tempconv.Fahrenheit(t)
|
||
|
|
c := tempconv.Celsius(t)
|
||
|
|
fmt.Printf("%s = %s, %s = %s\n",
|
||
|
|
f, tempconv.FToC(f), c, tempconv.CToF(c))
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//!-
|