extern "C"{

#include <lua.h>

#include <lauxlib.h>

#include <lualib.h>

}

#include <stdarg.h>

#include <stdio.h>

#include <stdlib.h>

#pragma comment(lib,"lua.lib")

void error(lua_State* L, const char* fmt, ...)

{

    va_list argp;

    va_start(argp, fmt);

    vfprintf(stderr, fmt, argp);

    va_end(argp);

    lua_close(L);

    exit(EXIT_FAILURE);

}

void load(char* filename, int* width, int* height)

{

    lua_State* L = luaL_newstate();

    luaopen_base(L);

    luaopen_io(L);

    luaopen_string(L);

    luaopen_math(L);

    if (luaL_loadfile(L, filename) || lua_pcall(L, , , ))

        error(L, "cannot run configuration file:%s", lua_tostring(L, -));

    lua_getglobal(L, "width");//每次调用将相应变量压入栈顶

    lua_getglobal(L, "height");

    if (!lua_isnumber(L, -))//lua_isnumber函数判断每个值是否为数字

        error(L, "width should be a number");

    if (!lua_isnumber(L, -))

        error(L, "height should be a number");

    *width = (int)lua_tonumber(L, -);//lua_tonumber函数将得到的数值转换成double类型并用(int)强制转换成整型

    *height = (int)lua_tonumber(L, -);

    lua_close(L);

}

int main()

{

    int width = ;

    int height = ;

    load("pp.lua", &width, &height);

    return ;

}