Simple DirectMedia Layer

Simple DirectMedia Layer (SDL) is a cross-platform software development library designed to provide a hardware abstraction layer for computer multimedia hardware components. Software developers can use it to write high-performance computer games and other multimedia applications that can run on many operating systems such as Android, iOS, Linux, macOS, and Windows. Simple DirectMedia Layer

SDL_RenderFillRect

• takes an argument as pass-by-reference.

SDL_RenderFillRect(renderer, &RECT_NAME);