What are the differences between C and C++ templates and macros?

What are the main differences between C and C++ templates and macros?

C macros are preprocessor directives that perform text substitution, while C++ templates are a feature of the language that allows for type-safe generic programming.

Can you give an example of how a macro works in C?

Sure! A simple macro in C could be defined as #define SQUARE(x) ((x) * (x)). This will replace SQUARE(5) with ((5) * (5)) during preprocessing.

How do templates in C++ improve code reusability?

Templates allow you to write a function or class that can operate with any data type, enhancing code reusability without sacrificing type safety.

Are there any performance differences between using templates and macros?

Yes, templates are type-checked at compile time, which can lead to better optimization, while macros are expanded at preprocessor time, which can lead to code bloat.