GoSub...Return Statement

Calls a subroutine that is indicated by a label inside a Sub 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.

Syntax:


GoSub label[:]

Parameters:

label: A line identifier indicating where to continue execution. The scope of a label in that of the routine it belongs to.

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 (":").


  Sub/Function foo
      ' statements
      GoSub label
      ' statements
      Exit Sub/Function
  label:
      ' statements
      Return
  End Sub/Function

Return 문 앞에 GoSub가 없을 경우 LibreOffice Basic은 오류 메시지를 반환합니다. 다음 Return 문에 도달하기 전에 Sub 또는 Function을 끝내려면 Exit Sub 또는 Exit Function을 사용합니다.

다음은 GoSub 및 Return 사용을 보여 주는 예입니다. 프로그램 구역을 두 번 실행함으로써 프로그램은 사용자가 입력한 두 숫자의 제곱근을 계산합니다.

Example:


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

GoTo Statement

On...GoSub Statement; On...GoTo Statement