An online flight booking system requires users to enter information such as their passport number, flight departure date, and the number of cabin bags.
Describe two different validation checks that could be implemented to ensure that the user's input is sensible before the booking is processed.
Practise Edexcel GCSE Computer Science Input/output with exam-style questions for GCSE Computer Science. 29 questions covering Accepting and responding to user input, Reading and writing CSV text files, Implementing validation, and Implementing authentication, matched to the Edexcel GCSE Computer Science (1CP2) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.