How To Use Named And Optional Parameters In C -

Struct members not explicitly initialized are automatically set to zero or NULL by the compiler, effectively making them "optional". Example Implementation:

The most common way to simulate named parameters is to pass a single struct to a function. By using C99 designated initializers, you can specify values for specific members by name. How to use named and optional parameters in C

#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 ) #define CREATE_WINDOW(

Standard C (ANSI C, C99, C11, etc.) does not natively support named or optional parameters in the way languages like C# or Python do. However, you can emulate this behavior by using a combination of , designated initializers , and variadic macros . 1. Using Structs and Designated Initializers However, you can emulate this behavior by using

: Used to retrieve an indefinite number of arguments.

: 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)