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Section 9. Program Control Instructions

9-11

statements following Then or Else, the program continues with the statement

following EndIf.

The Else and ElseIf clauses are both optional. You can have as many ElseIf

clauses as you like in a block If, but none can appear after an Else clause. Any

of the statement blocks can contain nested block If statements.

CRBasic looks at what appears after the Then keyword to determine whether

or not an If statement is a block If. If anything other than a comment appears

after Then, the statement is treated as a single-line If statement.

A block If statement must be the first statement on a line. The Else, ElseIf,

and EndIf parts of the statement can have nothing but spaces in front of them.

The block If must end with an EndIf statement.

For Example

If a > 1 And a <= 100 Then

...

ElseIf a = 200 Then

...

EndIf

Tip Select Case may be more useful when evaluating a single expression

that has several possible actions.

If...Then ... Else Statement Example

The example illustrates the various forms of the If...Then...Else syntax.

Dim X, Y, Temp( 5 ) 'Declare variables.

X = Temp( 1 )

If X < 10 Then

Y = 1 '1 digit.

ElseIf X < 100 Then

Y = 2 '2 digits.

Else

Y = 3 '3 digits.

EndIf

. . . . 'Run some code

RunProgram ("Device:FileName", Attrib)

Used to run a datalogger program file from the active program file.

Syntax

RunProgram ( "Device:FileName", Attrib )

Remarks

The RunProgram has the following parameters:

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Campbell DSP4 Spezifikationen Seite 273