I've tried something similar previously. typedef struct pixel { int r; int g; int b; } pixel_t; #define PIXEL(red, green,

I've tried something similar previously. typedef struct pixel { int r; int g; int b; } pixel_t; #define PIXEL(red, green, blue) \ (pixel_t) \ { \ .r = (red), \ .g = (green), \ .b = (blue) } Then I could invoke the function void display_pixel(pixel_t pixel); by calling, display_pixel(PIXEL(255, 255, 255)); And you could even, return PIXEL(255, 255, 255); Like magic. In other words, how do you pretend that you have syntax-level OOP in C... On retrospect, the macro could reduce readability, writing the argument explicitly may be better. display_pixel((pixel_t) {.r = 255, .g = 255, .b = 255});