It offers:

Most SDL3 functions now return bool ( true for success, false for failure) instead of the old 0 vs -1 integer system. This makes code much more readable.

Events now use the SDL_EVENT_ prefix (e.g., SDL_EVENT_QUIT instead of SDL_QUIT ).

// Cleanup SDL_DestroyRenderer(renderer); SDL_DestroyWindow(window); SDL_Quit(); return 0;