menu_book Course Curriculum (COBOL) expand_more
IF ELSE END-IF
Learn IF ELSE END-IF in COBOL through a focused explanation, a dedicated topic-specific example, an engineering boundary, and a mastery check.
IF ELSE END-IF is a focused COBOL lesson inside Control Flow. The example uses the construct named in the lesson directly rather than reusing a generic placeholder.
Trace the example from its inputs through IF ELSE END-IF and identify the behavior that would change if that construct were removed or replaced. Pay attention to the language-specific rules shown by the syntax, because neighboring lessons intentionally exercise different mechanisms.
Topic-specific example
IF WS-SCORE >= 70
DISPLAY "PASS"
ELSE
DISPLAY "RETRY"
END-IF.
For IF ELSE END-IF, test one realistic boundary: empty data, invalid input, unavailable resources, lifetime/cleanup, type constraints, or concurrency timing where applicable. A successful happy path is not enough to prove the construct is used correctly.