Errors that can occur in programs (Edexcel GCSE Computer Science): Flashcards
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Programming error definition
Programming error definition
A mistake/bug that stops a program working properly
Three main types of programming errors
Three main types of programming errors
Syntax errors, runtime errors, logic errors
Syntax error definition
Syntax error definition
Breaking the rules of the programming language
Why syntax errors are easiest to find
Why syntax errors are easiest to find
Computer tells you exactly where the problem is
Examples of syntax errors
Examples of syntax errors
Misspelling commands, missing punctuation, wrong indentation
Runtime error definition
Runtime error definition
Errors that only show up when program is running
When runtime errors typically occur
When runtime errors typically occur
When you ask computer to do something impossible
Examples of runtime errors
Examples of runtime errors
Dividing by zero, accessing non-existent file or list item
Logic error definition
Logic error definition
Program runs but produces wrong results or behaves unexpectedly
Why logic errors are hardest to find
Why logic errors are hardest to find
No error messages appear, program seems to work normally
What to check when finding logic errors
What to check when finding logic errors
Variable initialization, mathematical operators, assignment statements
Debugging definition
Debugging definition
Process of finding and fixing problems in code
How to debug logic errors
How to debug logic errors
Test with known inputs, use print statements, work through code line by line