printを呼ぶ

LUA 
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"

int main() {
  lua_State *L = lua_open();
  luaopen_base(L);
  luaL_loadstring(L, "function f() print(0) end");
  lua_call(L, 0, 0);
  lua_getglobal(L, "f");

  if(lua_pcall(L, 0, 0, 0) != 0) {
    printf("error: %s\n", lua_tostring(L, -1));
  }

  lua_pop(L, 1);
  lua_close(L);
}

#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"

int main() {
  lua_State *L = lua_open();
  luaopen_base(L);
  //luaL_loadstring(L, "function f() print(0) end");
  //lua_call(L, 0, 0);
  lua_getglobal(L, "print");
  lua_pushstring(L, "hello lua.");

  if(lua_pcall(L, 1, 0, 0) != 0) {
    printf("error: %s\n", lua_tostring(L, -1));
  }

  lua_pop(L, 1);
  lua_close(L);
}