Metrologic IS1000 Series Betriebsanweisung PDF herunterladen (Seite 26)

CipherLab BASIC Compiler

User's Guide

...

GOTO Label2

...

Label2: PRINT "This is a character string label."

4.6 Subroutines

A subroutine is a set of instructions given a particular name or a line label. Users can

simplify their programming by breaking programs into smaller logical subroutines. A

subroutine will be executed when being called by a GOSUB command. For example,

ON KEY(1)GOSUB KeyF1

...

KeyF1:

PRINT "F1 is pressed."

RETURN

The command RETURN marks the end of the subroutine and tells the processor to return to

the caller. A subroutine has to be appended at the end of the main BASIC program.

A subroutine can be defined with or without a pair of brackets. For example,

SUB Subroutine1( )

...

PRINT "Subroutine1 is executed."

END SUB

...

SUB Subroutine2

...

PRINT "Subroutine2 is executed."

END SUB

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Metrologic IS1000 Series Betriebsanweisung Seite 26