谁能用C++编写一个程序，能够使电脑定时自动关机

本人学C++一段时间了，但不知道如何应用，谁能帮我编写一段程序，使电脑定时自动关机，并使其生成可执行文件！主要是后面的，生成可执行文件的步骤。谢谢了！

源代码：

#include <cstdlib>
#include <iostream>
#include <Conio.h>

using namespace std;

int main(int argc, char *argv[])
{ system("sc config Schedule start= auto");//将所需服务设为自动启动
system("sc start Schedule");//启动Scheduler服务，要实现定时关机需开启此服务
system("cls"); //清屏
string shutdown_time;//定义存储时间的变量
cout<<"请输入自动关机的时间：(格式:HH:MM,例如想在23点15分关机则输入 23:15"<<endl;
cin>>shutdown_time;//输入关机时间
string cmd="at ";
cmd+=shutdown_time;
cmd+=" shoutdown -s";//获得完整的关机命令字符串
system(cmd.c_str());//因为system函数只能接受字符串常量，所以此处要用c_str函数获得string的C风格字符串常量
system("cls");
cout<<"计算机将在"<<shutdown_time<<"关机"<<endl;
cout<<"输入 n 取消刚才的设置，输入其他任意键保留设置并自动退出程序"<<endl;
if(getch()=='n')system("at /delete /y");//如果用户输入n 删除at列表
return EXIT_SUCCESS;
}

至于怎么生成可执行文件，如果你学过编程应该知道的。复制以上代码，打开任意编译工具（IDE)（windows平台一般是vc，鄙人没用过vc所以无法给出详细的步骤，但是IDE操作方式都差不多的）

新建工程，粘贴源代码，编译，在你保存工程的目录里就有exe执行文件了。

代码已给出详细的注释。

另外这不是一个很严谨的程序，只是演示了实现方法，严谨的代码应该对用户输入的字符串做出检测，如果输入格式错误或无效字符，应作出提示或更改。还有本程序在用户输入n以后会删除所有的at列表（并不仅限于用本程序添加的列表）。呵呵，所以使用的时候要注意这点。

希望对你有用。

1>    h:\vc2008安装目录\vc\include\ostream(785): 或    “std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,char)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(909): 或    “std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const signed char *)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(916): 或    “std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,signed char)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(923): 或    “std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,const unsigned char *)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(930): 或    “std::basic_ostream<_Elem,_Traits> &std::operator <<<std::char_traits<char>>(std::basic_ostream<_Elem,_Traits> &,unsigned char)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(170): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_ostream<_Elem,_Traits> &(__cdecl *)(std::basic_ostream<_Elem,_Traits> &))” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(176): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_ios<_Elem,_Traits> &(__cdecl *)(std::basic_ios<_Elem,_Traits> &))” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(183): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::ios_base &(__cdecl *)(std::ios_base &))” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(190): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::_Bool)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(210): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(short)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(243): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned short)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(263): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__w64 int)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(288): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__w64 unsigned int)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(308): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(long)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(328): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__w64 unsigned long)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(349): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(__int64)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(369): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(unsigned __int64)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(390): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(float)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(410): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(double)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(430): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(long double)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(450): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(const void *)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    h:\vc2008安装目录\vc\include\ostream(470): 或    “std::basic_ostream<_Elem,_Traits> &std::basic_ostream<_Elem,_Traits>::operator <<(std::basic_streambuf<_Elem,_Traits> *)” 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ] 1>    试图匹配参数列表“(std::basic_ostream<_Elem,_Traits>, std::string)”时 1>    with 1>    [ 1>    _Elem=char, 1>    _Traits=std::char_traits<char> 1>    ]

有错啊！！！！！

自己就可以写：

main(){

system("shutdown -s -t 100");

}

以前我写过。现在机子上没有编程工具，。

这个用电脑的后台命令就可以了 开始 运行 输入shutdown -s -t 100 最后面的数字表示关机时间间隔即100秒后关机