#include <stdio.h>

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


/* the Lua interpreter */
lua_State* L;

int main ( int argc, char *argv[] )
{
	int sum;
	
	/* initialize Lua */
	L = lua_open();

	/* load Lua base libraries */
	lua_baselibopen(L);

	/* load the script */
	lua_dofile(L, "add.lua");
	
	/* the function name */
	lua_getglobal(L, "add");

	/* the first argument */
	lua_pushnumber(L, 41 );

	/* the second argument */
	lua_pushnumber(L, 22 );

	/* call the function with 2
	   arguments, return 1 result */
	lua_call(L, 2, 1);

	/* get the result */
	sum = (int)lua_tonumber(L, -1);
	lua_pop(L, 1);

	/* print the result */
	printf( "The result is %d\n", sum );

	/* cleanup Lua */
	lua_close(L);

	return 0;
}