IF expression THEN
    statements
ENDIF
 
IF expression THEN
    statements
ELSE
    statements
ENDIF

Marks the end of a multi-line IF block. ENDIF may follow either the THEN block (no ELSE) or the ELSE block.

Remarks: Only ENDIF is accepted. END IF (with a space) is not recognised.

Behaviour

A multi-line IF begins with IF expression THEN and must be closed by a matching ENDIF.
An optional ELSE may appear before the closing ENDIF.
ENDIF matches the nearest unmatched IF.

Remarks: The single-line form; IF expression THEN statement ELSE statement; does not use ENDIF.

Examples

IF with no ELSE

IF SCORE >= 100 THEN
    PRINT "LEVEL UP!"
ENDIF

IF with ELSE

IF READY THEN
    PRINT "GO!"
ELSE
    PRINT "WAIT..."
ENDIF

Nested IF blocks

IF A > 0 THEN
    IF B > 0 THEN
        PRINT "A and B are positive"
    ELSE
        PRINT "A is positive, B is not"
    ENDIF
ELSE
    PRINT "A is not positive"
ENDIF

See also: IF · ELSE