说明：  病毒程序源码实例剖析-“求职信”病毒：病毒会创建一个文件名和原来程序相对应的并带有“~1”的程序临时运行，使得用户不会发觉程序已经被病毒修改了，当程序运行结束后，病毒会将临时文件删除。
(Instance of profiling of virus program source code- the "cover letter" virus-：The virus will create a file name and the original program that corresponds with a temporary run of "1" program, allows the user does not find that program has been modified by the virus after the end of the program is running, the virus temporary files will be deleted.)