RETURN - QB64 Wiki

RETURN

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RETURN is used in GOSUB procedures to return to the original call code line or a specified line label.


Contents

Syntax

RETURN [{linelabel|linenumber}]


Parameters

  • RETURN without parameters returns to the code immediately following the original GOSUB call.
  • line number or linelabel after the RETURN statement returns code execution to that label.


Usage:

  • Normally required at the end of a GOSUB procedure unless the procedure returns using a loop.
  • RETURN is not used in error handling procedures. Error procedures use RESUME line number or RESUME NEXT.
  • GOSUB procedures use line numbers or line labels designated with a colon after the number or label.
  • If RETURN is encountered without a previous GOSUB call a "RETURN without GOSUB" error is produced.
  • To avoid errors, place GOSUB procedures AFTER the main program code END or after an EXIT SUB or EXIT FUNCTION call.


Example 1: Returns after a Gosub.

FOR a = 1 TO 10 PRINT a IF a = 5 THEN GOSUB five NEXT END 'END or SYSTEM stop the program before the execution of a sub procedure five: PRINT "Aha! Five!" RETURN

1 2 3 4 5 Aha! Five! 6 7 8 9 10


Example 2: Returns to a specific line label.

GOSUB hey PRINT "it didn't go here." hoho: PRINT "it went here." END hey: RETURN hoho

Code by Cyperium

it went here.



See also:



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