PPT Slide

Error Handling

So far:

• have done very little error handling

• have assumed that things will work as intended

Rules of Thumb:

• programmers must test and debug to find and correct compile-time errors

• compiler doesn’t solve the problem of run-time errors  (e.g., incorrect values or state)

• programmer must insure that run-time errors

result in “graceful” program behavior

• “graceful” means “the program doesn’t just

produce wrong effects or blow up!

Exceptions--Why?

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