Named And Optional Parameters In C - How To Use

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

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 How to use named and optional parameters in C

To avoid typing the struct name and parentheses every time, you can wrap the function call in a variadic macro. Copied to clipboard 3

#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 ) you can use variadic functions

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.