IGCSE Algorithms and Pseudocode Foundations for G8 Practice Exam

Focus on input validation: checking data as soon as it enters a program to ensure it is correct and usable. Validation checks cover all the rules that input data must meet, such as being within a certain range, having the right data type, not being empty, or matching a required format. The general term for these rules is validation checks, which is why it’s the best choice. A range check is a specific example of a validation check that ensures a value lies between defined limits. The other terms don’t describe rules about correctness: inputs are the data themselves, and structure diagrams are visual representations of data or program components, not validation rules.