IF...ENDIF

Syntax

Command
Mandatory parameter
Optional parameter
Mandatory keyword
Optional keyword

There are different ways in which the IF...ENDIF command can be used:

Multiple line version

IF <condition>
<code>
[ELSEIF <condition>
<code>
[ELSEIF <condition>
<code>
...
[ELSE
<code>]]]
ENDIF

Single line version

IF <condition> THEN <instruction> [ELSE <instruction>]

Description

Multiple line version

Creates a branch where the condition controls which code will be executed. If the condition evaluates "True" then the first part until ELSE will be executed. If the condition evaluates "False" then, if specified, the ELSEIF statements will be executed until a condition evaluates "True". If both the IF condition and all the ELSEIF conditions (if applicable) evaluate "False", then code between ELSE and ENDIF will be executed. In contradiction with the IF...THEN...ELSE construction, the beginning of code elements within this statement and also the keywords ELSEIF, ELSE and ENDIF must be written on a new line.

Single line version

Works the same as the multi line IF...ELSE...ENDIF construction. However, the THEN and ELSE keyword must always be written on the same line as the <condition>, no ELSEIF's are allowed, only single instructions can be executed and the ENDIF keyword is not included.

Diagram

Multiple line version

Single line version

Returned value type

None

Parameters

Multiple line version

Parameter	Description
<Condition>	Expression evaluating to true or false. If the condition contains one or more operands of the type Realstring that are not part of a nested operation, the left and right operand of the condition will not be truncated. In all other cases both operands in the condition will be truncated first before the comparison is executed.
<Code>	The code under 'IF' is executed if the condition is evaluated as "True". The code under 'ELSE' is executed if the condition is evaluated as "False".

Single line version

Parameter	Description
<Condition>	Expression evaluating to true or false. If the condition contains one or more operands of the type Realstring that are not part of a nested operation, the left and right operand of the condition will not be truncated. In all other cases both operands in the condition will be truncated first before the comparison is executed.
<Instruction1>	A single instruction that is executed if the condition is evaluated as "True".
<Instruction2>	A single instruction that is executed if the condition is evaluated as "False".

Examples

Multiple line version

if q_boekcharge.betkon = 'C'
    sa-100 += ' (Collect)'
elseif q_boekcharge.betkon = 'A'
    sa-100 += ' (All-in)'
elseif q_boekcharge.betkon = 'V'
    sa-100 += ' (VAT-free)'
else
    sa-100 += ' (Unknown)'
endif

Single line version

if not s-month > 3 then process-q1 () else process-other ()

if s-month <= 3 then process-q1 ()

Return to

Commands