Error Handling

List of:	Discussion Topic
Subjects:	Error Handling
Contents:	Application Development Manual

Error handling transfers the control of the program from one place to another if unwanted results occur or a user interrupts the program. ACIS handles all standard errors that occur while executing a program. It also provides a procedure to add new error types. ACIS also provides a procedure that produces warnings at various stages of program execution.

Fatal errors are those from which there is no immediate recovery. Errors that are unexpected events, but are not immediately fatal, are warnings. The same event is a fatal error under some circumstances, unexpected but nonfatal under other circumstances, and acceptable under other circumstances. Regardless of whether a given event is fatal, the same error code is used. The function used with that error code informs the system whether the error was fatal.

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