Difference between revisions of "Line numbers"

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* [[ON ERROR]] [[GOTO]] line label or number calls use [[RESUME]] [[NEXT]] or a line label or number to resume to.
* [[ON ERROR]] [[GOTO]] line label or number calls use [[RESUME]] [[NEXT]] or a line label or number to resume to.
* [[GOTO]] or [[RUN]] can refer to a specific numerical line number or text line label.
* [[GOTO]] or [[RUN]] can refer to a specific numerical line number or text line label.
* Line numbers are no longer required in QB or QB64 except for [[GOSUB]], [[RUN]] or [[GOTO]] situations!
* Line numbers are no longer required in QB or QB64 except for [[GOSUB]], [[RUN]] or [[GOTO]] situations.
* Line numbers and labels are not allowed after SUB/FUNCTION blocks. They are allowed inside SUB/FUNCTIONS though.





Latest revision as of 14:47, 16 September 2020

Line numbers or line labels are used to denote GOTO, RUN or GOSUB procedure lines or all code lines as in GW Basic.


Number Syntax

10 GOTO {line number| line label}

Label Syntax

PictureData:
DATA 0, 0, 12, 12, 14, 12, 12, 0, 0


  • Line numbers are used to denote a specific line of code. No colon required.
  • Line labels are used to denote a specific line of code with a colon when separating it from a code line.
  • GOSUB or DATA block line labels can be numerical or text line names. RESTORE can use the label to reuse data.
  • GOSUB blocks require a RETURN to return to the original call or to a line label or number to return to.
  • ON ERROR GOTO line label or number calls use RESUME NEXT or a line label or number to resume to.
  • GOTO or RUN can refer to a specific numerical line number or text line label.
  • Line numbers are no longer required in QB or QB64 except for GOSUB, RUN or GOTO situations.
  • Line numbers and labels are not allowed after SUB/FUNCTION blocks. They are allowed inside SUB/FUNCTIONS though.


See also:



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