一个用c++写的简单病毒，程序利用windows的开机自动启动功能可以在系统每次启动时运行，并且程序能实现自我复制功能-Using c++ to write a simple virus, the program automatically starts using the windows boot feature to run at every system startup, and the program to achieve self-replication

通过设置para.txt文件，显示孩子用电脑的时间，只有在规定时间内，屏幕才能用，否则屏幕锁定，无法使用。 可以将该程序加入到启动菜单里，登录系统后自动运行。(By setting up the para.txt file, it shows the time for the child to use the computer. Only in the specified time, the screen can be used, otherwise the screen is locked