c语言程序重启自身？

可以使举雀笑用exec函数来正含实岁祥现： #include <stdio.h>#include <unistd.h>int main(int argc, char *argv[]) { int ifor (i = 0i <10i++) { printf("do something...\n")sleep(2)} execvp(argv[0], argv)return 0}

你说的应该是用cmd吧，直接给你源码，带注释

#include<stdio.h>

#include<windows.h>//include一个叫做<windows.h>的库，里面有system函数

int

main()

{

system("shutdown

-r

-t

100")

/*

这里的system有很绝棚多功能，自己上网去查

这里"shutdown"是打开cmd命令提示符并输入字符串里的东西

你所说的自动重启就是用"/r"升差来实现的（"-r"跟"/r"是一样的）

后面的"-t"(即"/t")是调节时间，以秒为单位，后面的100就是100秒后重启

至于cmd里的东西，你自己打开cmd然后输入"shutdown"再回车吵宏皮提示就出来了

*/

return

0

}

不懂追问，求采纳

Call Shell ("shutdown -l -f")'注销

Call Shell ("shutdown -s -f")'关闭

Call Shell ("shutdown -r -f")'重启

或设定状态

SetSuspendState

是否支持休眠

IsPwrHibernateAllowed

是否支持待机

IsPwrSuspendAllowed看MSDN的Power Management部分ColdMooon 1.主要过程

'在窗体内

'放置一个时间控凯州件，两个标签控件和一个文体框控件，和两个单选按钮，两个搭孙磨命令按钮Option Explicit

Dim txtTime '保存输入时间

Dim nowTime '保存实时时间

Dim oldTime '保存开始定时时间Private Sub Form_Load()me.caption="定时关机"me.label1.caption="关机时间："

me.Option1.caption="在指定时间关机(时间格式：00:00:00)"

me.Option2.caption="延迟指定的时间关机"

me.command1.caption="确定"

me.command2.caption="取消"

Me.Text1 = GetSetting("ShutDownWindows", "Options", "知斗ShutDownTime", "1:00")

me!timer1.interval=1000End Sub

Private Sub Command1_Click()

oldTime = Time

If Not IsDate(Text1.Text) Then '用IsData函数判断输入的时间格式

MsgBox "你所输入的不是时间格式,请修改!", , "Wrong"

ElseIf Option1.Value Then

txtTime = TimeValue(Text1.Text)

Timer1.Enabled = True '启动定时器

Me.WindowState = 1 '最小化窗体

Me.Caption = "定时关机-启动"

ElseIf Option2.Value Then

Me.WindowState = 1

Me.Caption = "定时关机-暂停"

End If

End SubPrivate Sub Command2_Click()Unload MeEnd Sub

Private Sub Form_Unload(Cancel As Integer)SaveSetting "ShutDownWindows", "Options", "ShutDownTime", Me.Text1End SubPrivate Sub Timer1_Timer()

nowTime = Time

Me.label2.Caption = Time

If Option1.Value Then

If DateDiff("s", nowTime, txtTime) <= 0 And DateDiff("s", nowTime, txtTime) >= -60 Then '用DateDiff函数判断是否到时间了

ShutDownPC True

Timer1.Enabled = False

End If

End If

End Sub '在标准模块内

Private Const EWX_LOGOFF = 0

Public Const EWX_SHUTDOWN = 1

Public Const EWX_POWEROFF = 8 '此参数在VB自带API浏览器并未提供，值得注意，如果没有此参数在Win2kServer会死在关机屏幕下

Private Const EWX_REBOOT = 2

Private Const EWX_FORCE = 4

Private Const TOKEN_ADJUST_PRIVILEGES = &H20

Private Const TOKEN_QUERY = &H8

Private Const SE_PRIVILEGE_ENABLED = &H2

Private Const ANYSIZE_ARRAY = 1

Private Const VER_PLATFORM_WIN32_NT = 2Type OSVERSIONINFO

dwOSVersionInfoSize As Long

dwMajorVersion As Long

dwMinorVersion As Long

dwBuildNumber As Long

dwPlatformId As Long

szCSDVersion As String * 128

End TypeType LUID

LowPart As Long

HighPart As Long

End TypeType LUID_AND_ATTRIBUTES

pLuid As LUID

Attributes As Long

End TypeType TOKEN_PRIVILEGES

PrivilegeCount As Long

Privileges(ANYSIZE_ARRAY) As LUID_AND_ATTRIBUTES

End TypePrivate Declare Function GetCurrentProcess Lib "kernel32" () As Long

Private Declare Function OpenProcessToken Lib "advapi32" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long

Private Declare Function LookupPrivilegeValue Lib "advapi32" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, lpLuid As LUID) As Long

Private Declare Function AdjustTokenPrivileges Lib "advapi32" (ByVal TokenHandle As Long, ByVal DisableAllPrivileges As Long, NewState As TOKEN_PRIVILEGES, ByVal BufferLength As Long, PreviousState As TOKEN_PRIVILEGES, ReturnLength As Long) As Long

Public Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Long, ByVal dwReserved As Long) As Long

Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" (ByRef lpVersionInformation As OSVERSIONINFO) As Long

'Detect if the program is running under Windows NT 检测是否为NT

Public Function IsWinNT() As Boolean

Dim myOS As OSVERSIONINFO

myOS.dwOSVersionInfoSize = Len(myOS)

GetVersionEx myOS

IsWinNT = (myOS.dwPlatformId = VER_PLATFORM_WIN32_NT)

End Function

'set the shut down privilege for the current application 为当前应用程序设置关机权限

Private Sub EnableShutDown()

Dim hProc As Long

Dim hToken As Long

Dim mLUID As LUID

Dim mPriv As TOKEN_PRIVILEGES

Dim mNewPriv As TOKEN_PRIVILEGES

hProc = GetCurrentProcess()

OpenProcessToken hProc, TOKEN_ADJUST_PRIVILEGES + TOKEN_QUERY, hToken

LookupPrivilegeValue "", "SeShutdownPrivilege", mLUID

mPriv.PrivilegeCount = 1

mPriv.Privileges(0).Attributes = SE_PRIVILEGE_ENABLED

mPriv.Privileges(0).pLuid = mLUID

' enable shutdown privilege for the current application 赋予当前应用程序关机权限

AdjustTokenPrivileges hToken, False, mPriv, 4 + (12 * mPriv.PrivilegeCount), mNewPriv, 4 + (12 * mNewPriv.PrivilegeCount)

End Sub

' Shut Down PC 关闭PC

Public Sub ShutDownPC(Force As Boolean)

Dim ret As Long

Dim Flags As Long

Flags = EWX_SHUTDOWN Or EWX_POWEROFF

If Force Then Flags = Flags + EWX_FORCE

If IsWinNT Then EnableShutDown

ExitWindowsEx Flags, 0

End Sub

'Restart PC 重起PC

Public Sub RebootPC(Force As Boolean)

Dim ret As Long

Dim Flags As Long

Flags = EWX_REBOOT

If Force Then Flags = Flags + EWX_FORCE

If IsWinNT Then EnableShutDown

ExitWindowsEx Flags, 0

End Sub

'Log off the current user 注消（登出）当前用户

Public Sub LogOff(Force As Boolean)

Dim ret As Long

Dim Flags As Long

Flags = EWX_LOGOFF

If Force Then Flags = Flags + EWX_FORCE

ExitWindowsEx Flags, 0

End Sub

'自动开机说明：（以CMOS Setup Utility - Copyright (C) 1984-2001 Award Software 为例)

'开机按Delete键进入CMOS Setup程序

'把选择移到Power Management Setup（电源管理设置), 按回车

'然后把选择移到Resume by Alarm,按PageDown键选择Enable

'移到下一行把Date(of Month) Alarm 设为0

'移到下一行把Time(hh:mm:ss) Alarm 设为[自己的开机时间],例如：8:0:0(早上8点开机） 我复制的 希望对楼主有帮助

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