用C语言实现电脑关机待机重启注销等功能

如何调用Windows API实现关机

[DllImport("user32")]

public static extern long SetWindowPos(long hwnd, long hWndInsertAfter, long X, long y, long cx, long cy, long wFlagslong)

[DllImport("user32")]

public static extern long ExitWindowsEx(long uFlags, long dwReserved)

[DllImport("shell32")]

public static extern long ShellAbout(long uFlags, long dwReserved)

public void DoExitWin(int flg)

{

bool ok

TokPriv1Luid tp

IntPtr hproc = GetCurrentProcess()

IntPtr htok = IntPtr.Zero

ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok)

tp.Count = 1

tp.Luid = 0

tp.Attr = SE_PRIVILEGE_ENABLED

ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid)

ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero)

ok = ExitWindowsEx(flg, 0)

}

//#include "stdafx.h"

#include "stdio.h"

#include "string.h"

#include "stdlib.h"

int print()

{

printf(" ╪╪╪╪╪╪╧╧╧╧╧╧╧╧╪╪╪╪╪╪\n")

printf("╔═══╧╧ C语言 关机程序 ╧╧═══╗\n")

printf("║※1.实现10分钟内的定时关闭计算机 ║\n")

printf("║※2.立即关闭计算机 ║\n")

printf("║※3.注销计算机 ║\n")

printf("║※0.退出系统 ║\n")

printf("╚═══════════════════╝\n")

return 0

}

void main()

{

system("title C语言关机程序")//设置cmd窗口标题

system("mode con cols=48 lines=25")//窗口宽度高度

system("color 0B")

system("date /T")

system("TIME /T")

char cmd[20]="shutdown -s -t "

char t[5]="0"

print()

int c

scanf("%d",&c)

getchar()

switch(c)

{

case 1:printf("您想在多少秒后自动关闭计算机？（0~600）\n")scanf("%s",t)system(strcat(cmd,t))break

case 2:system("shutdown -p")break

case 3:system("shutdown -l")break

case 0:break

default:printf("Error!\n")

}

system("pause")

exit(0)

}

可以的，给以下代码已经编译运行确认了(害得我关了一次机！)

#include<stdio.h>

#include<dos.h>

#include<stdlib.h>

void

main()

{

char

shut[8]

char

b[81]

printf("Hello,

Welcome

to

the

TC

automatic

shutdown

procedures\n")

printf("

Watermelon

production\n")

printf("Please

enter

your

desired

automatic

shutdown

of

time:")

scanf("%s",shut)

sprintf(b,"at

%s

shutdown

-s",shut)

system(b)

}

运行实例：

Hello,

Welcome

to

the

TC

automatic

shutdown

procedures

Watermelon

production

Please

enter

your

desired

automatic

shutdown

of

time:12:29

新加了一项作业，其作业

ID

=

1

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