O-LevelComputer ScienceProgramming2210/22 · Oct/Nov 2019 · Q54 Marks

A programmer writes a program to weigh baskets of fruit in grams, keeping a total of the weight and counting the number of baskets. The total weight is stored in a variable Total and the number of baskets is stored in a variable BasketCount. Explain, including examples of programming statements, how totalling and counting could be used in this program. Totalling Counting

TotallingExplain, including examples of programming statements, how totalling could be used in this program.[2]
CountingExplain, including examples of programming statements, how counting could be used in this program.[2]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.

[4] Totalling:
∞ Adding the weight of each basket to the total weight as each weight is entered
∞ Total = Total + Weight
Counting:
∞ Adding one to/incrementing the number of baskets as each weight is entered
∞ BasketCount = BasketCount + 1

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Topic: Programming, O-Level Computer Science (syllabus 2210). Structured question, 4 marks.
Source: O-Level Computer Science, Oct/Nov 2019 Paper 2 Variant 2, question 5.

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