Line numbers

From QB64 Wiki
Jump to navigation Jump to search

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

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:

Keyword Reference - Alphabetical
Keyword Reference - By Usage
Main Wiki Page