int main1(int argc, const char * argv[])
{
    
    lua_State* L = luaL_newstate();//创建栈
    luaopen_base(L);
    luaopen_io(L);//打开lua base,io两个库

    int ret = luaL_loadfile(L,"tlua.lua");//加载tlua.lua文件
    //成功后会返回0，反之返回非0；同时错误信息放到栈顶
    if(ret != 0){
        printf("load file error %s\n",
               luaL_checkstring(L, -1));
        lua_pop(L, 1);

    }
    //一定要按照lua_pcall(L,0,0,0)的形式调用一下，个人感觉是将lua全运行起来
    ret = lua_pcall(L, 0, 0, 0);
    if(ret != 0){
        printf("pcall error %s\n",
               luaL_checkstring(L, -1));
        lua_pop(L, 1);
    }
    stackDump1(L);

    //lua_getglobal会将某lua变量放置到栈顶
    lua_getglobal(L, "var1");
    lua_getglobal(L, "var2");
    printf("lua var2 = %td ,var1=%td\n",lua_tointeger(L, -1),lua_tointeger(L, -2));
    
    lua_getglobal(L, "add");
    lua_pushinteger(L, 1);
    lua_pushinteger(L, 2);
    //lua_call 调lua函数；2个参数，1个返回值
    lua_call(L, 2, 1);
    
    stackDump1(L);
    
    lua_close(L);
    return 0;
}

int main(int argc, const char * argv[])
{
    lua_State* L = luaL_newstate();
    stackDump2(L);

    luaopen_base(L);
    luaopen_string(L);
    luaopen_table(L);
    stackDump2(L);

    lua_register(L,"func1",func1);//注册func1,当lua调用时，可以知道指向哪个函数指针
    int i = luaL_dofile(L,"tlua.lua");
    stackDump2(L);
    if( i != 0){
        printf("%s\n",luaL_checkstring(L, -1));
        lua_pop(L, -1);
    }
    lua_close(L);
    return 0;
}

var1 = 100
var2 = 200


print("i am lua")
--print( func1(10,11) )

function add(v1,v2)
    return v1+v2;
end
print(add(1,2))