GoSub...Return Statement

Calls a subroutine that is indicated by a label from a subroutine or a function. The statements following the label are executed until the next Return statement. Afterwards, the program continues with the statement that follows the GoSub statement.

Notkun:

skoða viðföng

Viðföng:

Sub/Function

skipanabálkur

Merki

skipanabálkur

GoSub Label

Exit Sub/Function

Merki:

skipanabálkur

Til baka

End Sub/Function

The GoSub statement calls a local subroutine indicated by a label from within a subroutine or a function. The name of the label must end with a colon (":").

Táknmynd fyrir aðvörun

If the program encounters a Return statement not preceded by GoSub, LibreOffice Basic returns an error message. Use Exit Sub or Exit Function to ensure that the program leaves a Sub or Function before reaching the next Return statement.


The following example demonstrates the use of GoSub and Return. By executing a program section twice, the program calculates the square root of two numbers that are entered by the user.

Dæmi:

Sub ExampleGoSub

Dim iInputa As Single

Dim iInputb As Single

Dim iInputc As Single

    iInputa = Int(InputBox("Enter the first number: ","NumberInput"))

    iInputb = Int(InputBox("Enter the second number: ","NumberInput"))

    iInputc=iInputa

    GoSub SquareRoot

    Print "The square root of";iInputa;" is";iInputc

    iInputc=iInputb

    GoSub SquareRoot

    Print "The square root of";iInputb;" is";iInputc

    Exit Sub

SquareRoot:

    iInputc=sqr(iInputc)

    Return

End Sub