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GeoBASIC Reference Manual 2.GeoBasic Constructs
TPS1100-Version 1.30 2-21
♦
Variables of simple types.
variable type
iSum Integer
dAngleDifference Angle
dHorizontalDistance Distance
lValidPoint Logical
♦
Variables of compound types.
variable with component/element type
Point1 CartesianPointType
Point1.iNumber Integer
Point1.dEastY Double
ArrayArray ArrayArrayType
ArrayArray(1) DoubleArray
ArrayArray(1)(1) Double
Matrix MatrixType
Matrix( 1, 1 ) Double
Matrix( x, y ) Double
(with x and y integer variables within the bounds)
For further examples see Sections 2.2.3 on Declaration of Arrays, 2.2.4 on
Declaration of Structures, and 2.3.2 on Declaration of Variables.
2.5 EXPRESSIONS
Syntax:
Expression ::= LogicalTerm { " OR " LogicalTerm }
LogicalTerm ::= LogicalFactor { "
AND
" LogicalFactor }
LogicalFactor ::= { " NOT " } LogicalPrimary
LogicalPrimary ::= SimpleExpression [ RelationOperator
SimpleExpression ]
RelationOperator ::= ( "
=
" | "
<>
" | "
>
" | "
<
" | "
>=
" | "
<=
" )
SimpleExpression ::= [ AddOperator ] Term
{ AddOperator Term }
AddOperator ::= ( "
+
" | "
-
" )
Term ::= Factor { MultOperator Factor }
MultOperator ::= ( " * " | " / " | " \ " | " MOD " )
Factor ::= Primary [ "
^
" Factor ]
Primary ::= ( Variable | Constant | FunctionCall |