Trace Tables | Computer for GCSE/IGCSE - Year 11 PDF Download

Trace Tables

• Trace tables are utilized to track algorithms and ensure they execute the intended task accurately. They are typically paired with test data to validate the algorithm's correctness, a process known as a dry run.
• These tables can be employed alongside flowcharts, pseudocode, or even real code if necessary.
• They also serve the purpose of unveiling an algorithm's objective by displaying output data and interim steps.
• At each step or iteration, trace tables document the algorithm's status, encompassing all variables influencing the output and the output itself.
• Comprising columns for each variable and the output, a trace table is structured to reflect any value alterations or output generations by updating the relevant row and column.

Trace Table Walkthrough

• When determining the highest number among ten user input numbers, the algorithm follows a specific flowchart.
• The initial number entered by the user automatically becomes the current highest number.
• The user is then asked to input nine more numbers. If a new number surpasses the current highest number, it replaces it.
• After inputting all ten numbers, the algorithm identifies and presents the number that stands as the highest among them.
• For illustration, consider the following example test data: 4, 3, 7, 1, 8, 3, 6, 9, 12, 10.