C++ How to Program, Ninth Edition

17. Exception Handling: A Deeper Look

It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.

—Franklin Delano Roosevelt

If they’re running and they don’t look where they’re going I have to come out from somewhere and catch them.

—Jerome David Salinger

Objectives

In this chapter you’ll learn:

• To use try, catch and throw to detect, handle and indicate exceptions, respectively.

• To declare new exception classes.

• How stack unwinding enables exceptions not caught in one scope to be caught in another.

• To handle new failures.

• To use unique_ptr to prevent memory leaks.

• To understand the standard exception hierarchy.

Outline

17.1 Introduction

17.2 Example: Handling an ...