Ze SDL way to do multimedia programming

// test of the SDL (Simple DirectMedia Layer) library
//
// here are the instructions to download and install ...
// http://cone3d.gamedev.net/files/sdlgfx/sdlDevCPP-1.2.4.zip
// unzip sdlDevCPP-1.2.4.zip and
// install SDL header files to Dev-Cpp/include/SDL
// install lib files to Dev-Cpp/lib
// copy SDL.DLL to Windows/system32
//
// once that is done, all you have to do is link with libSDL.a via
// Project>>Project Options>>Parameters>>Add Lib>>libSDL.a
// a Dev-C++ console application

#include <cstdlib>
#include <SDL/SDL.h>  // should be in include/SDL

SDL_Surface *screen;

void render()
{   
  // check lock surface
  if (SDL_MUSTLOCK(screen)) 
    if (SDL_LockSurface(screen) < 0) 
      return;

  // SDL time in milliseconds
  int tick = SDL_GetTicks();

  int i, j, yofs, ofs;

  // draw some pixels to the screen
  // you can show off your math skills here!
  yofs = 0;
  for(i = 0; i < 480; i++)
  {
    for(j = 0, ofs = yofs; j < 640; j++, ofs++)
    {
      ((unsigned int*)screen->pixels)[ofs] = i * i + j * j + tick;
    }
    yofs += screen->pitch / 4;
  }

  // check unlock surface
  if (SDL_MUSTLOCK(screen)) 
    SDL_UnlockSurface(screen);

  // update the whole screen
  SDL_UpdateRect(screen, 0, 0, 640, 480);    
}


int main(int argc, char *argv[])
{
  // initialize SDL subsystem video (there are others)
  if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) 
  {
    fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError());
    exit(1);
  }

  // important, register SDL_Quit to be called and tidy things up on exit
  atexit(SDL_Quit);
    
  // create a 640x480 window with 32bit pixels
  screen = SDL_SetVideoMode(640, 480, 32, SDL_SWSURFACE);
  
  // detect possible error
  if ( screen == NULL ) 
  {
    fprintf(stderr, "Unable to set 640x480 video: %s\n", SDL_GetError());
    exit(1);
  }

  // event loop
  while (1)
  {
    // render stuff
    render();

    // poll for events and handle the ones we need
    SDL_Event event;
    while (SDL_PollEvent(&event)) 
    {
      switch (event.type) 
      {
      case SDL_KEYDOWN:
        break;
      case SDL_KEYUP:
        // if escape key is pressed quit program
        if (event.key.keysym.sym == SDLK_ESCAPE)
          return 0;
        break;
      case SDL_QUIT:
        return 0;
      }
    }
  }
  return 0;
}