Declaration - Learn To Code - PlayBASIC Documentation

Declaration

Declaration .... List Of Variables ... EndDeclaration

Parameters: NONE

Returns: NONE

Declaration opens a variable declaration block. The block is closed by the EndDeclaration statement. Within this block Variables (integer/float & string) can be implicitly listed (declared) . Variables can either be listed one per line, or be separated across a line using the coma character.

Declaration blocks are really only useful when the compiler has Explicit Mode enabled.

FACTS:

* Declaration blocks only support the declaration of Integer, Float and String variables.

* Variables listed between the Declaration and EndDeclaration statements must be implicitly declared (Use their postfix symbol). Therefore you can NOT use the "As DataType" method.

Mini Tutorial:

This example just demos the basic of PlayBASIC Explicit mode.

; -------------------------------------------------------
; NOTE: Explicit and ForceDeclaration  are interchangeable
; -------------------------------------------------------

; Force PlayBASIC to expect all variables to be
; declared prior to use

  Explicit


; declare a list of variables using a Declaration Block
  Declaration
     MyVariable
     MyFloatVariable#
     MyStringVariable$
  EndDeclaration

; Declare Variables with DIM

  Dim ThisIsAnotherIntegerVariable As Integer
  Dim ThisIsAnotherFloatVariable As Float
  Dim ThisIsAnotherStringVariable As String



; Assign these variables some data
  MyVariable               =99
  MyFloatVariable#     =123.456
  MyStringVariable$ = "Hello World"


; Assign these variables some data
  ThisIsAnotherIntegerVariable          =12345678
  ThisIsAnotherFloatVariable#          =111.222
  ThisIsAnotherStringVariable$          ="Hello World Again"


; Display the variables
  Print MyVariable
  Print MyFloatVariable#
  Print MyStringVariable$

; Print the second batch of variables
  Print ThisIsAnotherIntegerVariable
  Print ThisIsAnotherFloatVariable#
  Print ThisIsAnotherStringVariable$



; Display the screen and wait for the user to press a key
  Sync
  WaitKey

This example would output.

  99
  123.456
  Hello World
  12345678
  111.222
  Hello World Again


Related Info:	Byte \| Dim \| Explicit \| Float \| ForceDeclaration \| Global \| Integer \| Local \| Pointer \| Static \| String \| Type \| Word :