我刚刚开始研究IT，我认为编写一个小程序以向您显示明天的日子会很有趣。可悲的是我被困住了。当前，当您从数组中写入正确的数字时，它可以工作，但是我希望它可以与字符串一起工作。因此，当您编写“ Maandag”（荷兰语中的星期一）时，程序将回答Dinsdag（荷兰语中的星期二）
到目前为止，这是我的代码：
package main
import (
"fmt"
)
func main() {
var counter int
var dag [7]string
dag[0] = "Zondag"
dag[1] = "Maandag"
dag[2] = "Dinsdag"
dag[3] = "Woensdag"
dag[4] = "Donderdag"
dag[5] = "Vrijdag"
dag[6] = "Zaterdag"
fmt.Println("Welke dag is het?")
fmt.Scan(&counter)
if counter == 6 {
counter = 0
fmt.Println(dag[counter])
}
if counter != 6 {
counter++
fmt.Println(dag[counter])
}
}
您正在寻找的是枚举。在Go中，它们可以这样实现：
type Weekday int
const (
Sunday Weekday = iota
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
)
func (day Weekday) String() string {
// declare an array of strings
// ... operator counts how many
// items in the array (7)
names := [...]string{
"Sunday",
"Monday",
"Tuesday",
"Wednesday",
"Thursday",
"Friday",
"Saturday"}
// → `day`: It's one of the
// values of Weekday constants.
// If the constant is Sunday,
// then day is 0.
// prevent panicking in case of
// `day` is out of range of Weekday
if day < Sunday || day > Saturday {
return "Unknown"
}
// return the name of a Weekday
// constant from the names array
// above.
return names[day]
}
// will display "Sunday"
fmt.Println(Sunday)
// will display "Monday"
fmt.Println(Sunday + 1)
如果不需要int底层类型，则可以这样创建它：
const (
Sunday = "Sunday"
//...
)
本文收集自互联网，转载请注明来源。
如有侵权，请联系 [email protected] 删除。
我来说两句