c++ - I'm trying to learn to make games with SDL. My book teaches SDL1.2.3 and I can't get it to work on Visual Studio. Can anyone help? My errors:

#include "sdl.h"
#include
            

#include
            

SDL_Surface* g_pMainSurface =
            NULL;
SDL_Event g_Event;

int main(int argc, char*
            argv[])
{
 if (SDL_Init(SDL_INIT_VIDEO)==-1)
 {

            fprintf(stderr, "Could not initialize SDL!\n");


            exit(1);
 }

 else
 {
 fprintf(stdout,
            "SDL initialized properly!\n");
 atexit(SDL_Quit);

            }

 g_pMainSurface = SDL_SetVideoMode(640, 480, 0,
            SDL_ANYFORMAT);


 if (!g_pMainSurface)

            {
 fprintf(stderr, "Could not creat main surface!\n");

            exit(1);
 }

 for (;;)
 {
 if
            (SDL_WaitEvent(&g_Event) == 0)

 {

            exit(1);
 }

 if (g_Event.type == SDL_QUIT)

            {
 fprintf(stdout, "Quit event has occurred.\n");
 break;

            }


 }

 fprintf(stdout, "Terminating
            program normally.\n");
 return
            (0);
}

1>main.obj
: error LNK2019: unresolved external symbol _SDL_SetVideoMode referenced in function
_SDL_main

1>main.obj : error LNK2019:
unresolved external symbol _SDL_WaitEvent referenced in function
_SDL_main

1>main.obj : error
LNK2019: unresolved external symbol _SDL_Init referenced in function
_SDL_main

1>main.obj : error LNK2019:
unresolved external symbol _SDL_Quit referenced in function
_SDL_main

1>MSVCRT.lib(exe_winmain.obj) :
error LNK2019: unresolved external symbol _WinMain@16 referenced in function "int
__cdecl __scrt_common_main_seh(void)"
(?__scrt_common_main_seh@@YAHXZ)