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Complete the trace table using the program in Figure 3 - AQA - GCSE Computer Science - Question 4 - 2023 - Paper 1
Question 4
Complete the trace table using the program in Figure 3. | numOne | numTwo | numThree | Final output | | ------ | ------ | -------- | ------------ | | 5 | 6 ... show full transcript
Worked Solution & Example Answer:Complete the trace table using the program in Figure 3 - AQA - GCSE Computer Science - Question 4 - 2023 - Paper 1
Step 1
Complete the trace table for the first row
Answer
When numOne = 5, numTwo = 6, and numThree = -1, the program evaluates the inputs. The output is calculated as follows:
Since numThree is negative, it would not contribute to the output. Hence, the output for this row is calculated as the area with:
Thus, the Final output for this row is "Area 30".
Step 2
Complete the trace table for the second row
Answer
For the input values numOne = 10, numTwo = 4, and numThree = 0, since numThree does not contribute to output:
The output calculates as:
However, the presence of zero value does not affect the area calculation. Therefore, the Final output remains as "Volume 0".
Step 3
Step 4
Describe one way that the program in Figure 3 could be made more robust
Answer
One way to enhance the robustness of the program is to add validation checks for the inputs. For instance, ensure that all user inputs are positive numbers. This could prevent erroneous calculations that arise when negative numbers or zero are provided, as these values may lead to incorrect outputs or unwanted behavior in the program.