Golang golang-label (snippet)

Go programming example 'golang-label'

golang-label

Golang beginners example: golang-label

package main

import (
    "fmt"
)

func BreakExample() {
    fmt.Println("\n\nBreak Example")
    for i := 0; i < 10; i++ {
        fmt.Print("\ni:", i)
        if i > 5 {
            break
        }
        fmt.Print(".")
    }
}

func ContinueExample() {
    fmt.Println("\n\nContinue Example")
    for i := 0; i < 10; i++ {
        fmt.Print("\ni:", i)
        if i > 5 {
            continue
        }
        fmt.Print(".")
    }
}

func ContinueToLabelExample() {
    var i, j int
    fmt.Println("\n\nContinue to Label Example")
OUT:
    for i = 0; i < 10; i++ {
        for j = 0; j < 10; j++ {
            fmt.Print("\ni:", i, "j:", j)
            if i > 2 && j > 2 {
                continue OUT
            }
            fmt.Print(".")
        }
    }

    fmt.Println("i:", i, "j:", j)
}

func GotoExample() {
    fmt.Println("\n\nGoto Example")
    var i = 0

START:
    i++
    fmt.Println("i:", i)
    if i < 10 {
        goto START
    }

    fmt.Println("finish")
}

func GotoExample2() {
    fmt.Println("\n\nGoto Example 2")
    var i = 0

START:
    i++
    fmt.Println("i:", i)
    if i < 10 {
        goto START
    } else {
        goto END
    }

    fmt.Println("never print this!!!")

END:
}

func main() {
    BreakExample()
    ContinueExample()
    ContinueToLabelExample()
    GotoExample()
    GotoExample2()
}

Useful links

• Learn Go: https://golangr.com
• Download Go: https://golang.org