Complex condition checks

Sometimes you can combine conditions with AND instead of nesting if statements

Gpa ← 0.9
LowestGrade ← 0.75

IF Gpa >= 0.85
  THEN
    IF LowestGrade >= 0.7
      THEN
        OUTPUT "Well done"
    ENDIF
ENDIF

IF Gpa >= 0.85 AND LowestGrade >= 0.7
  THEN
    OUTPUT "Well done"
ENDIF

How AND statements are processed

First Condition	Second Condition	Condition evaluates as
TRUE	TRUE	TRUE
TRUE	FALSE	FALSE
FALSE	TRUE	FALSE
FALSE	FALSE	FALSE

If you need to remember the results of a condition check later in your code, use Boolean variables as flags

Gpa ← 0.9
LowestGrade ← 0.75
HonourRoll ← FALSE

IF Gpa >= 0.85 AND LowestGrade >= 0.7
  THEN
    HonourRoll ← TRUE
  ELSE
    HonourRoll ← FALSE
ENDIF

// Somewhere later in your code
IF HonourRoll
  THEN
    OUTPUT "Well done"
ENDIF

Combining operators allows you to handle complex business rules in your code but must be tested very carefully to avoid introducing errors