progress-4gl Variables
Introduction
Progress ABL is statically typed. The variables need to be declared and the datatype cannot be changed during run time.
Syntax
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DEFINE VARIABLE i AS INT64 INITIAL -200 NO-UNDO. //A 64-bit integer initialized to -200
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DEFINE VARIABLE l AS LOGICAL NO-UNDO. //A logical variable named l
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DEFINE VARIABLE c AS CHARACTER NO-UNDO CASE-SENSITIVE. //A case sensitive ('a' <> 'A') variable.
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DEFINE VARIABLE dt AS DATE INTIAL TODAY NO-UNDO. //A date variable set to todays date.
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DEFINE VARIABLE a AS CHARACTER EXTENT 5 NO-UNDO. //An character array with length = 5
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DEFINE VARIABLE j AS INTEGER EXTENT NO-UNDO. //An extent without a set length
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DEFINE VARIABLE b AS DATETIME LABEL "Departure time". //A variable with a label
