Computer Science · May / June 2026 · Paper 22 · Question 4
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The program development life cycle is split into several stages. Outline what happens during the coding and testing stages of the program development life cycle. coding testing [6] 5 Turn over
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One mark per mark point for coding, max three
Writing the program code in a programming/coding language
… using pseudocode/flowcharts/structure diagrams from the design/earlier stage to create your code
Documenting your code with comments // making sure your code is maintainable
Writing procedures/functions // Use library routines/functions
Using a compiler/interpreter/IDE when writing the code
Testing the code in small parts as you write it allow iterative testing
… to ensure that it works correctly / as expected // … to refine your code One mark per mark point for testing, max three
The final stage of testing the whole program for errors
Use of test data with known outcomes
… to ensure the whole program produces the expected outcomes (from the test data) // … to make sure the program accepts valid data and rejects invalid data
Correct errors // debug the code
Allow one mark max for identifying at least two types of test data e.g. normal, abnormal, boundary, extreme
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