O-LevelComputer ScienceAlgorithm design and problem-solving2210/21 · May/June 2018 · Q43 Marks
A programmer has written a routine to check that prices are below $10.00. These values are used as test data. 10.00 9.99 ten Explain why each value was chosen.
Mark scheme
Marking points from the official mark scheme (May/June 2018). The mark or mark type is shown in brackets.
- [1] 10.00: boundary/erroneous data // the price should be rejected // value is out of range
- [1] 9.99: boundary/extreme/normal data // the prices should be accepted // value is within normal range
- [1] ten: erroneous/abnormal data // input should be rejected // value is wrong type
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