Using trace tables (Edexcel GCSE Computer Science): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What do trace tables track as an algorithm runs?
What do trace tables track as an algorithm runs?
How variables change
What is a 'dry-run' when completing trace tables?
What is a 'dry-run' when completing trace tables?
Running code without a computer
What does each column in a trace table represent?
What does each column in a trace table represent?
A different variable or input/output
What does each row typically represent in a trace table?
What does each row typically represent in a trace table?
One pass through a loop or line
Why are trace tables particularly valuable?
Why are trace tables particularly valuable?
Debugging algorithms before running code
How should you work through an algorithm when completing a trace table?
How should you work through an algorithm when completing a trace table?
Line by line
A while loop continues as long as num1 < total. When does it stop if num1 equals total?
A while loop continues as long as num1 < total. When does it stop if num1 equals total?
Immediately, as condition is false
What values does range(0, 4) generate in a for loop?
What values does range(0, 4) generate in a for loop?
0, 1, 2, 3
What happens when a loop condition becomes false?
What happens when a loop condition becomes false?
Continue to next instruction after loop
How many times does 'for thePower in range(0, 4)' execute the loop?
How many times does 'for thePower in range(0, 4)' execute the loop?
4 times
Which is a common mistake when completing trace tables?
Which is a common mistake when completing trace tables?
Not updating all relevant variables
What should you always check before deciding whether to add another row to a trace table?
What should you always check before deciding whether to add another row to a trace table?
The loop condition