Date | November 2021 | Marks available | 3 | Reference code | 21N.1.SL.TZ0.8 |
Level | SL | Paper | 1 | Time zone | no time zone |
Command term | Construct | Question number | 8 | Adapted from | N/A |
Question
Construct a trace table for the following algorithm:
I = 0
loop while 6 > I
K = K + I
I = I + 2
end loop
output(K)
Markscheme
Award [3 max]
Award [1] for correct values in column I
Award [1] for correct values in column K
Award [1] for correct output
Note: Column 6 > I
may not appear in the trace table.
Examiners report
Candidates were generally able construct a trace table for a given algorithm. They were also able to demonstrate the completion of this table. The main error seen was that the algorithm stops once the value of I reaches 6, but many candidates continued their trace table for at least one more iteration after that.