Which keyword is NOT part of the exception handling mechanism in C++?

The keyword "finally" is not a part of the exception handling mechanism in C++. In C++, exception handling is managed using a combination of three primary keywords: "try," "catch," and "throw."

The "try" block is used to enclose code that might throw an exception. It acts as a boundary for where exceptions can be caught. When an exception is thrown within the "try" block using the "throw" keyword, the control is transferred to the corresponding "catch" block that matches the type of the exception.

The "catch" block is responsible for handling the exception, allowing the programmer to define how the program should respond to different types of errors or unexpected conditions.

In contrast, "finally" is a keyword found in some other programming languages (such as Java and C#), which is used to execute code that must run regardless of whether an exception occurred or not. C++ does not include a "finally" mechanism; instead, it relies on destructors to clean up resources when objects go out of scope, making resource management integral to C++'s design philosophy.