N = 5
S = 0
R = 0
loop while N > 0
A = N mod 3
if A = 0
then
S = S - N
else
if A = 1
then
S = S + N
else
S = S + 1
end if
end if
R = R + S
N = N - 1
end loop
output('The result is ', R)Most-appropriate topic code (CED):
Answer:
The values of N, S, R and A are recorded during each iteration of the loop.
| N | S | R | A | Output |
|---|---|---|---|---|
| 5 | 0 | 0 | 2 | |
| 4 | 1 | 1 | 1 | |
| 3 | 5 | 6 | 0 | |
| 2 | 2 | 8 | 2 | |
| 1 | 3 | 11 | 1 | |
| 0 | 4 | 15 | The result is 15 |
Working through the iterations:
After the final iteration, \(N\) becomes \(0\), so the loop terminates and the algorithm outputs 15.
Award [6 max]
Award [1] for a trace table with at least four columns, excluding the output column.
Award [1] for each correct column: \(N\), \(S\), \(R\), \(A\), and output.