#include <stdio.h>
#include <SDL/SDL.h>

void imprimir_rectangulo (SDL_Surface *screen, int x, int y);

int main(int argc, char *argv[])
{
	SDL_Surface *screen;
	SDL_Event event;
    
	if (SDL_Init(SDL_INIT_VIDEO) == -1)
	{
		printf("Error: %s\n", SDL_GetError());
		return 1;
	}

	screen = SDL_SetVideoMode(320, 240, 16, SDL_SWSURFACE);

	if (screen == NULL) 
	{
		printf("Error: %s\n", SDL_GetError());
		return 1;
	}

	SDL_WM_SetCaption("Ejemplo básico", NULL);

	imprimir_rectangulo(screen, 20, 30);

	while (SDL_WaitEvent(&event))
	{
		if (event.type == SDL_QUIT)
			break;
	}

	SDL_Quit();
	return 0;
}

void imprimir_rectangulo (SDL_Surface *screen, int x, int y)
{
	SDL_Rect rect = {x, y, 50, 50};
	Uint32 a = SDL_MapRGB(screen->format, 255, 200, 100);
	
	SDL_FillRect(screen, &rect, a);
	SDL_UpdateRect(screen, rect.x, rect.y, rect.w, rect.h);
}