#include <SDL/SDL.h>
#define SDL_WINDOWPOS_UNDEFINED 0
#define SCREEN_WIDTH 800
#define SCREEN_HEIGHT 600
#define SDL_WINDOW_SHOWN 1

SDL_Window* gWindow;
SDL_Surface* gScreenSurface;
SDL_Surface* gHelloWorld;

int init(){
int success = 1;
if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
{
    printf( "SDL could not initialize! SDL_Error: %sn", SDL_GetError() );
    success = 0;
}
else
{
    gWindow = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
    if( gWindow == NULL )
    {
    printf( "Window could not be created! SDL_Error: %sn", SDL_GetError() );
    success = 0;
    }
    else
    {
    gScreenSurface = SDL_GetWindowSurface( gWindow );
    }
}
return success;
}

int loadMedia(){
int success = 1;
gHelloWorld = SDL_LoadBMP( "/circuit.png" );
if( gHelloWorld == NULL )
{
    printf( "Unable to load image! SDL Error: %sn", SDL_GetError() );
    success = 0;
}
return success;
}

void close()
{
SDL_FreeSurface( gHelloWorld );
gHelloWorld = NULL;
SDL_DestroyWindow( gWindow );
gWindow = NULL;
  SDL_Quit();
}

int main(int argc, char* args[]){
  init();
  loadMedia();
  close();
  return 0;
}

program.c:7: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token

#include <SDL/SDL.h>
#define SDL_WINDOWPOS_UNDEFINED=0
#define SCREEN_WIDTH=800
#define SCREEN_HEIGHT=600
#define SDL_WINDOW_SHOWN=1

warning: missing whitespace after the macro name