Validation (Edexcel GCSE Computer Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the main purpose of validation in programming?
What is the main purpose of validation in programming?
To ensure data is suitable for processing
What does 'garbage in, garbage out' mean in programming?
What does 'garbage in, garbage out' mean in programming?
Bad data produces bad results
What does a length check verify?
What does a length check verify?
The correct number of characters
What does the len() function do?
What does the len() function do?
Counts characters in input
Which operator checks if input length is NOT equal to 4?
Which operator checks if input length is NOT equal to 4?
!=
What does a presence check ensure?
What does a presence check ensure?
User has entered something
Which two methods can detect empty input?
Which two methods can detect empty input?
len(key) == 0 and key == ''
What does a range check verify?
What does a range check verify?
Value falls between acceptable limits
Range checks work with which types of data?
Range checks work with which types of data?
Both numbers and text
Which Boolean operators combine conditions in range checks?
Which Boolean operators combine conditions in range checks?
and and or
Why should real programs combine different validation types?
Why should real programs combine different validation types?
For thorough data checking
Why provide clear error messages in validation?
Why provide clear error messages in validation?
To help users understand expected input