Go - Variables(converter(from fahrenheit into celsius, from feet into meters), fmt module, Scanf method, type(number, float64))

Introducing Go

開発環境

• macOS High Sierra - Apple (OS)
• Emacs (Text Editor)
• Go (プログラミング言語)

Introducing Go: Build Reliable, Scalable Programs (Caleb Doxsey (著)、O'Reilly Media)のChapter 3.(Variables)、Exercises(No. 480)5、6.を取り組んでみる。

コード(Emacs)

package main

import "fmt"

func main() {
 fmt.Print("Enter a fahrenheit: ")
 var fahrenheit float64
 fmt.Scanf("%f", &fahrenheit)
 celsius := (fahrenheit - 32) * 5 / 9
 fmt.Println(celsius)

 fmt.Print("Enter a feet: ")
 var feet float64
 fmt.Scanf("%f", &feet)
 meters := 0.3048 * feet
 fmt.Println(meters)
}

入出力結果(Terminal)

$ go run sample3.go
Enter a fahrenheit: 100
37.77777777777778
Enter a feet: 100
30.48
$ go run sample3.go
Enter a fahrenheit: 10
-12.222222222222221
Enter a feet: 10
3.048
$