C++20 for Programmers, 3rd Edition

Chapter 12. Exceptions and a Look Forward to Contracts

Objectives

In this chapter, you’ll:

■ Understand the exception-handling flow of control with try, catch and throw.

■ Provide exception guarantees for your code.

■ Understand the standard library exception hierarchy.

■ Define a custom exception class.

■ Understand how stack unwinding enables exceptions not caught in one scope to be caught in an enclosing scope.

■ Handle new dynamic memory allocation failures.

■ Catch exceptions of any type with catch(...).

■ Understand what happens with uncaught exceptions.

■ Understand which exceptions should not be handled and which cannot be handled.