Program Flow Control

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The following pages describe the various elements of the VPL programming language that control the flow of a program. The elements are divided into two groups - that is selection and iteration elements.

 

 

 

VPL offers the following language elements for conditional execution of code:

 

 

IF-THEN-ELSE

CASE-OF

 

 

VPL offers the following language elements for iterative execution of code:

 

 

WHILE-DO

FOR-TO-DO

REPEAT-UNTIL

BEGIN-END

 

Keywords used in combination with the above:

 

RETURN

EXIT

PROGRAM

UPDATEIO

UPDATEOUT