/text/sbasic/shared/03090301.xhp Sun Microsystems, Inc. converted from old format - fpe

GoSub...Return statement GoSub...Return Statement [Runtime] 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.

Syntax: see Parameters Parameters: Sub/Function statement block Label statement block GoSub Label Exit Sub/Function Label: statement block Return 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 (":"). If the program encounters a Return statement not preceded by GoSub, $[officename] Basic returns an error message. Use Exit Sub or Exit Function to ensure that the program leaves a Sub or Function before reaching the next Return statement. The following example demonstrates the use of GoSub and Return. By executing a program section twice, the program calculates the square root of two numbers that are entered by the user. Example: Sub ExampleGoSub Dim iInputa As Single Dim iInputb As Single Dim iInputc As Single iInputa = Int(InputBox$ "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