#include “SDL.h”

#define SCREEN_WIDTH 320
#define SCREEN_HEIGHT 240
#define SCREEN_DEPTH 8

int main(int argc, char *argv[]) {
SDL_Surface *screen;
Uint8 *p;
int x = 10, y = 20;

/* Initialize SDL */
SDL_Init(SDL_INIT_VIDEO);

/* Initialize the screen / window */
screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_DEPTH, SDL_SWSURFACE);

/* Make p point to the place we want to draw the pixel */
p = (Uint8 *)screen->pixels + y * screen->pitch + x * screen->format->BytesPerPixel;

/* Draw the pixel! */
*p=0xff;

/* update the screen (aka double buffering) */
SDL_Flip(screen);
while(1);
}