require "lfs"
local oldpath = lfs.currentdir()
lfs.chdir("src//app//core//")
echo("is file exit??")
if io.exists("c15.lua") then
echo("yes!!!")
else 
    echo("no!!")
end
lfs.chdir(oldpath)

local lfs = require "lfs"
    local path  = lfs.currentdir()
    local fileName = package.searchpath("c"..id,path.."/src/app/core/?.lua")
    if fileName~=nil then
         print("fffffffffff:"..fileName)
         card = require("app.core.c"..id).new(id)
    else
         card = require("app.core.Card").new(id)
    end