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A structure represents a heterogeneous set of elements. Each element is called a
member; the declaration of a structure type specifies a name and type for each
member. The syntax of a structure type declaration is

structure structname

dim member1 as type1
'...
dim membern as typen

where 

structname

is a valid identifier, each 

type

denotes a type, and each 

member

is a valid identifier. The scope of a member identifier is limited to the structure in
which it occurs, so you don’t have to worry about naming conflicts between member
identifiers and other variables.

For example, the following declaration creates a structure type called Dot:

structure Dot

dim x as float
dim y as float

Each 

Dot

contains two members: 

x

and 

y

coordinates; memory is allocated when

you instantiate the structure, like this:

dim m, n as Dot

This variable declaration creates two instances of 

Dot

, called 

m

and 

n

.

A member can be of the previously defined structure type. For example:

' Structure defining a circle:
structure Circle

dim radius as float
dim center as Dot

end structure

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- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 5