Line numbers: Difference between revisions

From QB64 Phoenix Edition Wiki
Jump to navigation Jump to search
No edit summary
No edit summary
 
Line 4: Line 4:
== Number Syntax ==
== Number Syntax ==
:: '''10''' [[GOTO]] {line number| line label}
:: '''10''' [[GOTO]] {line number| line label}


== Label Syntax ==
== Label Syntax ==

Latest revision as of 10:38, 29 January 2023

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



Navigation:
Main Page with Articles and Tutorials
Keyword Reference - Alphabetical
Keyword Reference - By usage