Using complex conditions

Using complex conditions can be more efficient than coding multiple single conditions.

In the two examples shown below, the inefficient code makes use of two separate simple conditions and as a result, requires two IF statements.

The efficient version requires only one selection statement. This is because a complex condition is used as part of the IF statement.This achieves the same outcome but places less demand on the processor and available RAM.

Inefficient	Efficient
IF age ˃= 18 THEN	IF age ˃= 18 AND age ˂=65 THEN
IF age˂=65	SET ticketCategory TO adult
SET ticketCategory TO adult	END IF
END IF
END IF

Inefficient	IF age ˃= 18 THEN
Efficient	IF age ˃= 18 AND age ˂=65 THEN

Inefficient	IF age˂=65
Efficient	SET ticketCategory TO adult

Inefficient	SET ticketCategory TO adult
Efficient	END IF

Inefficient	END IF
Efficient

Inefficient	END IF
Efficient

Robustness

Using selection statements

EvaluationUsing complex conditions

Using complex conditions

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