What are macros in C++ and how do I use them?

What are macros in C++ and how do I use them?

Macros in C++ are preprocessor directives that define code snippets to be replaced before compilation. You can use them to simplify repetitive code.

Can you give me an example of a macro?

Sure! Here's a simple example:

#define SQUARE(x) ((x) * (x))

This macro calculates the square of a number.

Are there any downsides to using macros?

Yes, macros can lead to code that is harder to debug and maintain. They don't respect scope and can cause unexpected behavior if not used carefully.

When should I prefer using inline functions over macros?

Inline functions provide type safety and better debugging support compared to macros. Use them when you need a small function that benefits from inlining.