What are some examples of C++ preprocessor directives?
An example of an AI chatbot conversation about C++ preprocessor directives and their usage.
What are some examples of C++ preprocessor directives?
C++ preprocessor directives are commands that are processed before the actual compilation of the code. Examples include #include, #define, and #ifdef.
Can you explain what #include does?
Certainly! The #include directive is used to include the contents of a file, typically a header file, into your program. This allows you to use functions and classes defined in that file.
What about #define? How is it used?
The #define directive is used to create macros. It allows you to define a constant or a function-like macro that can be used throughout your code. For example, #define PI 3.14 defines a constant PI.
Are there any conditional directives?
Yes, directives like #ifdef, #ifndef, and #endif are used for conditional compilation. They allow you to include or exclude parts of code based on whether a certain macro is defined.
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