How To Use Named And Optional Parameters In C Review

To avoid typing the struct name and parentheses every time, you can wrap the function call in a variadic macro.

Struct members not explicitly initialized are automatically set to zero or NULL by the compiler, effectively making them "optional". Example Implementation: How to use named and optional parameters in C

For a more "classic" C approach, you can use variadic functions, though these do not provide true named parameters and are harder to use safely. To avoid typing the struct name and parentheses

: The caller must still know the order or use "sentinel" values (like NULL ) to mark the end of the argument list. Summary of Techniques Supports Named? Supports Optional? Standard Requirement Standard Positional Struct + Initializer Yes (defaults to 0) C99 or later Variadic Macros Yes (via struct) C99 or later stdarg.h Yes (manual) : The caller must still know the order

#define CREATE_WINDOW(...) create_window((WindowArgs){__VA_ARGS__}) // Now you can call it more like a native feature: CREATE_WINDOW(.width = 1024, .height = 768, .title = "Editor"); Use code with caution. Copied to clipboard 3. Alternative: Variadic Functions ( stdarg.h )