Handling multiple conditions

You may need to check multiple conditions to determine the correct action

Province ← "Ontario"

IF Province = "Alberta"
  THEN
    Tax ← 0.05
ENDIF
IF Province = "Nunavut"
  THEN
    Tax ← 0.05
ENDIF
IF Province = "Ontario"
  THEN
    Tax ← 0.13
ENDIF

OUTPUT "Tax is ", Tax

If multiple conditions cause the same action they can be combined into a single condition

Province ← "Nunavut"

IF Province = "Alberta" OR Province = "Nunavut"
  THEN
    Tax ← 0.05
ENDIF
IF Province = "Ontario"
  THEN
    Tax ← 0.13
ENDIF

OUTPUT "Tax is ", Tax

How OR statements are processed

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

If an action depends on a combination of conditions you can nest if statements

Country ← "Canada"
Province ← "Nunavut"

IF Country = "Canada"
  THEN
    IF Province = "Alberta" OR Province = "Nunavut"
      THEN
        Tax ← 0.05
    ENDIF
    IF Province = "Ontario"
      THEN
        Tax ← 0.13
    ENDIF
  ELSE
    Tax ← 0.0
ENDIF

OUTPUT "Tax is ", Tax

Handling real world business rules may require complicated conditional logic, but the code can still be written efficiently

• Apply appropriate state or federal taxes based on location

• Calculate salary based on job level