Difference between revisions of "Documentation/BASIC Guide/Constants"
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Latest revision as of 09:00, 30 March 2012
Constants are values which may be used but not changed by the program.
Defining Constants
In OpenOffice.org Basic, use the keyword Const to declare a constant.
Const A = 10
Const B = A+5
Const Hi = "Hello World"
Scope of Constants
Constants have the same scope as variables (see Scope and Life Span of Variables), but the syntax is slightly different. A Const definition in the module header is available to the code in that module. To make the definition available to other modules, add the Public keyword.
Public Const one = 1
Predefined Constants
OpenOffice.org Basic predefines several constants. Among the most useful are:
- True and False, for Boolean assignment statements
- PI as a type Double numeric value
Dim bHit as Boolean
bHit = True
Dim dArea as Double, dRadius as Double
' ... (assign a value to dRadius)
dArea = PI * dRadius * dRadius
fr:FR/Documentation/BASIC Guide/Constants hu:HU/Documentation/BASIC Guide/Constants it:IT/Documentation/BASIC Guide/Constants ja:JA/Documentation/BASIC Guide/Constants zh:ZH/Documentation/BASIC Guide/Constants
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