C.1. Introduction

In Chapter 3, you learned that there are two types of errorscompilation errors and logic errorsand you learned how to eliminate compilation errors from your code. Logic errors, also called bugs, do not prevent a program from compiling successfully, but can cause a program to produce erroneous results, or terminate prematurely, when it runs. Most compiler vendors, like Microsoft, provide a tool called a debugger, which allows you to monitor the execution of your programs to locate and remove logic errors. A program must successfully compile before it can be used in the debuggerthe debugger helps you analyze a program while it is running. The debugger allows you to suspend program execution, examine and set variable values and much more. In this appendix, we introduce the Visual Studio debugger, several of its debugging tools and new features added for Visual Studio 2005.