本程序可加到用户的源程序之前，起到加锁的作用。本程序的特点是：

口令保密性强(保存于文件KLK.CFG中，此文件名也可由用户重新命名)，而

且用户可随时修改口令。在程序中当用户输入口令后，系统首先测试口令文

件KLK.CFG是否存在(只有用户运行了修改口令子函数后才会生成口令文件，

否则系统只认默认口令88888888)，若存在则从中取出口令字，否则系统用

默认口令与用户输入的口令进行较验。另外，修改口令子函数changkl()，

可在用户程序中调用，以修改口令文件中的口令字。

-procedures can be added to the user's source, the role played locked. This process is characterized by : Password confidentiality strong (KLK.CFG preserved in documents, file name may also be re-named users), and user passwords can be modified at any time. The procedure when a user enter a password, the password system, in the first test document KLK.CFG existence (only users running modified only after Functions password generated password, or the system default passwords but only 88888888), and if there were removed from the words password, or the system using default passwords and users input the password for more testing. In addition, the revised password Functions changkl (), the user can call procedures, to change the password file passwords.