Video 1

a logic error is a mistake in the algortithm or program that causes it to behave incorrectly or unexpectedly
syntax error: mistake in the program where rules of language aren’t followed
run-time error: mistake in the program that occurs during execution,
workflow error: occurs when a computer attempts to handle number outside of defined values

Video 2

effective ways to test errors:
- test cases
- hand tracing
- visualizations
- debuggers
- adding extra output statements
syntax error: this information is stated, the particular line is given
logic errors: the program runs, but is behaving unexpectedly, not immediately noticed, use test cases to find logic errors.
hand tracing: writing out the values of the variables within the loop as it iterates to determine if the output is correct
use visualizations and debuggers if other stratagies don’t work

testing uses defined inputs to ensure that program is producing expected outcomes
results can be used for testing
defined inputs used to test a program should demonstrate expected outcomes
program requirments are needed to identify defined inputs for testing
think about program specifications (list events, behaviors, respondings)

AP COMPUTER SCIENCE PRINCIPLES