Error Processing We shall use a single enumerated type called Error code to report errors from all of our programs and functions The enumerated type Error code is part of the utility package in Appendix C Stacks use three values of an Error code success, overflow, underflow Later, we shall use several further values of an error code.Error Processing We shall use a single enumerated type called Error code to report errors from all of our programs and functions. The enumerated type Error code is part of the utility package in Appendix C. Stacks use three values of an Error_code: success, overflow, underflow Later, we shall use several further values of an Error code