SDL_Flip - Swaps screen buffers

       On  hardware  that supports double-buffering, this function sets up a flip and returns. The hardware will
       wait for vertical retrace, and then swap video buffers before the next video surface blit  or  lock  will
       return.   On   hardware   that   doesn't   support   double-buffering,  this  is  equivalent  to  calling
       SDL_UpdateRect(screen,0,0,0,0)

       The SDL_DOUBLEBUF flag must have been passed to SDL_SetVideoMode, when setting the video  mode  for  this
       function to perform hardware flipping.

       SDL_Flip - Swaps screen buffers

       This function returns 0 if successful, or -1 if there was an error.

SDL_SetVideoMode, SDL_UpdateRect, SDL_Surface

SDL                                          Tue 11 Sep 2001, 23:01                                  SDL_Flip(3)

#include"SDL.h"intSDL_Flip(SDL_Surface*screen);