简单C++关机程序（源码）：
#include
using namespace std;
int main()
{
system(“title C++关机程序”);
system(“mode con cols=35 lines=20”);
system(“color 0”);
system(“date /T”);
system(“TIME /T”);
cout<<"--------c++关机程序--------"<<endl;
cout<<" 1.20分钟后关闭计算机"<<endl;
cout<<" 2.立即关闭计算机"<<endl;
cout<<" 3.立即注销计算机"<<endl;
cout<<" 4.退出系统"<<endl;
cout<<"---------------------------"<<endl;
cout<<“请选择项目:”<<endl;
int ilnput;
cin>>ilnput;
switch(ilnput)
{
case 1:
cout<<“电脑将在20分钟后关机”<<endl;
system(“shutdown -s -f -t 1200”);
cout<<“输入任何数字或字母解除关机：”<<endl;
int a;
cin>>a;
system(“shutdown -a”);
break;
case 2:
system(“shutdown -s -f -t 0”);
break;
case 3:
system(“shutdown -l”);
break;
case 4:
cout<<“按任意键继续……”<<endl;
break;
default:
cout<<“输入错误”<<endl;
}
return 0;
}
来源：https://blog.csdn.net/liboxin20051025/article/details/100046357