IF...ELSE...ELSEIF...ENDIF

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The if-then construct (sometimes called if-then-else) is common across many programming languages. Although the syntax varies quite a bit from language to language, the basic structure looks like.

Action available for the following operating systems:

Parameters

• Condition <unquoted string> - This parameter indicates a condition or conditions that is evaluated.

Usage

Consider the following variables and respecting values:

Variable	Value
VAR(0)	1
VAR(1)	2
VAR(2)	10
VAR(3)	0
VAR(4)	""

Example 1

If(VAR(0)=1 AND VAR(2)=2)
Set Value(VAR(0),Numeric, 4)
Else
Set Value(VAR(0),Numeric, 40)
End If

Result:

Variable	Value
VAR(0)	40
VAR(1)	2
VAR(2)	10

Example 2

If(VAR(0) <> 1)
Set Value(VAR(0),Numeric, 4)
Else If(VAR(1) > 1 AND VAR(2) < 50)
Set Value(VAR(0),Numeric, 40)
End If	

Result:

Variable	Value
VAR(0)	40
VAR(1)	2
VAR(2)	10

Example 3

If(VAR(3)= VAR(4))

Comparison made is 0 = "" and the result is "" Return: True

Example 4

If(VAR(4)= VAR(3))

Comparison made is "" = 0 and the result is "0" Return: False

Each If action must have a corresponding End if action.

When the operands are of different types (numeric, string), the second operand is converted to the type of the first (See Example 3 and Example 4).