OpenOffice.org BASIC Guide - OpenOffice.org wiki

Constants
Const A = 10
You can also specify the constant type in the declaration:
Const B As Double = 10
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 As Integer = 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
Operators
OpenOffice.org Basic understands common mathematical, logical, and comparison operators.
Mathematical Operators
Mathematical operators can be applied to all numbers types, whereas the + operator can also be used to
concatenate strings.
+ Addition of numbers and date values, concatenation of strings
& Concatenation of strings
- Subtraction of numbers and date values
* Multiplication of numbers
/ Division of numbers
\ Division of numbers with a whole number result (rounded)
^ Raising the power of numbers
MOD modulo operation (calculation of the remainder of a division)
Note – Although you can use the + operator to concatenate strings, the Basic interpreter can become confused
when concatenating a number to a string. The & operator is safer when dealing with strings because it assumes
that all arguments should be strings, and converts the arguments to strings if they are not strings.
22 OpenOffice.org 3.2 BASIC Guide · March 2010