ITPEC FE Subject B April 2026 Question 2

b, b, d — the first if is a separate statement, so the second one overwrites whatever it assigned.

That separation is the specification bug the question warns about: a score above 90 is set to "a" and then immediately re-set to "b", because 90 is also above 70.

Trace each call:

• •f(92) — retvar starts "w"; 92 > 90 sets "a"; the second if then finds 92 > 70 and overwrites with "b"
• •f(72) — 72 > 90 is false; 72 > 70 sets "b"
• •f(-10) — both > 90 and > 70 fail, > 60 fails, and ≤ 60 is true, giving "d"

Answer (d)

Why not others:
- (a) and (b) and (c) — all answer "a" for f(92), which would be correct only if the grade branches formed one chain; here the second if runs unconditionally
- (e) and (f) — give "c" for f(72), using the > 60 branch even though > 70 matched first and elseif stops the chain
- (c) and (f) — return the initial "w" for f(-10), missing that -10 ≤ 60 is true, so the last branch does fire

Key rule: Separate if statements each execute; only elseif makes them exclusive. When a variable is assigned twice, the last assignment wins.

AI-generated — may contain errors