Handling Uncaught and Unexpected Exceptions (C++)

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Go Up to Standard C++ Exception Handling

If an exception is thrown and no exception handler is found—that is, the exception is not caught—the program calls a termination function. You can specify your own termination function with set_terminate. If you do not specify a termination function, the terminate function is called. For example, the following code uses the my_terminate function to handle exceptions not caught by any handler.

void SetFieldValue(DF *dataField, int userValue) {
	if ((userValue < 0) || (userValue) > 10))
		throw EIntegerRange(0, 10, userValue);
	// ...

void my_terminate() {
	printf("Exception not caught");

// Set my_terminate() as the termination function

// Call SetFieldValue. This generates an exception because the user value is greater
// than 10. Because the call is not in a try block, my_terminate is called.
SetFieldValue(DF, 11);

If a function specifies which exceptions it throws and it throws an unspecified exception, an unexpected function is called. You can specify your own unexpected function with set_unexpected. If you do not specify an unexpected function, the unexpected function is called.

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