QBasic 1.1: ON...GOSUB Statement

Explanation

Branch to one of several locations, depending on the value of an expression.

Useful and cross-version information about the programming environments of QBasic, QuickBasic and Visual Basic for DOS.

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ON expression% GOSUB line-list

ON expression% GOTO line-list

expression%	An expression in the range 0 through 255.
line-list	A set of labels or line numbers. If the value of the expression is 1, the program branches to the first line in the list; if the expression is 2, it branches to the second line, and so on.
SELECT CASE provides a better way to perform multiple branching.


FOR i% = 1 TO 2
		ON i% GOSUB One, Two
NEXT i%
END

One: PRINT "One"
RETURN
Two: PRINT "Two"
RETURN