An expression represents a computation that produces a value that the debugger displays in the Expressions window. You can attach an expression's value to breakpoints and watchpoints. The debugger evaluates all expressions each time it executes a statement.

An expression can combine literal values (numbers and character strings), variables, registers, pointers, and C++ object members with operations such as addition, subtraction, logical and, and equality.

An expression can appear in the Expressions window, the Breakpoints window, or a Memory window. The debugger treats the result of the expression differently, depending on the window in which the expression appears.

This section discusses how the debugger handles expressions. This section includes the following topics:

• How Expressions are Interpreted
• Using Expressions
• Example Expressions
• Expression Syntax
• Using Vector Variables in Expressions (Mac OS)