How to change system time by program

Changing system time needs special privileges... This example will show you how to get special privileges and set the system time for windows


#include <iostream>
#include <time.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <windows.h>

using namespace std;


int main()
{
cout << "Started ..." << endl;

HANDLE hPrivilegeToken = NULL;
if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hPrivilegeToken))
hPrivilegeToken = NULL;

if (hPrivilegeToken == NULL)
{
cout << "#Error : Failed to OpenProcess for Privilages" << endl;
return 0;
}

TOKEN_PRIVILEGES tok;
tok.PrivilegeCount = 1;
tok.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

if (LookupPrivilegeValue(NULL, SE_SYSTEMTIME_NAME, &tok.Privileges[0].Luid))
if (AdjustTokenPrivileges(hPrivilegeToken, FALSE, &tok, sizeof(tok), NULL, NULL))
{
SYSTEMTIME  time;
GetSystemTime(&time);

time.wYear = 2043;
time.wDay = 6;
time.wMonth = 8;

SetSystemTime(&time);


return true;
}

cout << "#Error : Failed to get Privilages" << endl;
return 0;
}