Explain terminate() and unexpected() function.- The terminate() is a library function which by default aborts the program.
- It is called whenever the exception handling mechanism cannot find a handler for a thrown exception.
- The unexpected() is called when a function with an exception specification throws an exception of a type that is not listed in the exception specification for the function
- A function declaration without a specification like throw(char*) may throw any type of exception, and one with throw() is not allowed to throw exceptions at all.
- By default unexpected() calls terminate().