To avoid typing the struct name and parentheses every time, you can wrap the function call in a variadic macro.
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
Struct members not explicitly initialized are automatically set to zero or NULL by the compiler, effectively making them "optional". Example Implementation: 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) Supports Optional
You explicitly name the struct members in the function call.
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