Denso RC5 Dokumentacja Pobierz pdf (Strona 188)

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8-6

8.6 Declaration Statement

Declare definitions in a declaration statement before using variables,

constants, functions and so on that are required to have designated names or

types in a program.

The following 3 broad types of statements fall under the declaration statement.

• Type declaration : declares the type of a variable on

: constant.

• Function/program declaration : declares a function or program.

• User coordinate system declaration : declares a user coordinate system.

8.6.1 Type Declaration

[ 1 ] Type Declaration Character (Postposition)

Fixed postpositions can be used to declare a variable type. Postpositions are

as follows.

Type Declaration Characters (Postpositions)

Type Postposition Example

Integer type postposition % A%

Single precision real type

postposition

!A!

Double precision real type

postposition

#A#

Character string type

postposition

$A$

Note: The variable type in a program is handled as the type first

declared. Even if a different type postposition from the

declaration is used in the middle of a program, the type is not

identified.

A, A%, A!, A#, and A$ are recognized as the same variables

and are registered as the type first used. Therefore, an error

will occur if a different type postposition from the one first

used is used.

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