Urgent help visualstudio build errors

I face errors while compiling code in vs2008 shown below. it gives unexpected errors..what could be the reason?

Code:

#define _WIN32_WINNT 0x0602
#include <Windows.h>
#include <powrprof.h>
#include <stdio.h>
#include <tchar.h>


#pragma comment(lib, "PowrProf.lib")

static ULONG isConnectedStandby(PVOID Context, ULONG Type, PVOID Setting);

ULONG isConnectedStandby(PVOID Context, ULONG Type, PVOID Setting)
{
switch(Type)
{
case PBT_APMSUSPEND:
printf( "PBT_APMSUSPEND");
break;
case PBT_APMRESUMESUSPEND:
printf( "PBT_APMRESUMESUSPEND");
break;
case PBT_APMRESUMEAUTOMATIC:
printf( "PBT_APMRESUMEAUTOMATIC");
break;
default:
printf( "DEFAULT");
break;
}
return 0;
}


static _DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS testCallback = {
isConnectedStandby,
nullptr
};


int __cdecl main()
{


HPOWERNOTIFY RegistrationHandle;

printf("Hello world\n");

PowerRegisterSuspendResumeNotification(
DEVICE_NOTIFY_CALLBACK,
&testCallback,
&RegistrationHandle
); 
/*
while(true) {
Sleep(1000);
}
*/
return 0;
}

1>------ Rebuild All started: Project: test1, Configuration: Debug Win32 ------
1>Deleting intermediate and output files for project 'test1', configuration 'Debug|Win32'
1>Compiling...
1>standby.cpp
standby.cpp(33) : error C2146: syntax error : missing ';' before identifier 'testCallback'
standby.cpp(33) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
standby.cpp(33) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
standby.cpp(34) : error C2440: 'initializing' : cannot convert from 'ULONG (__cdecl *)(PVOID,ULONG,PVOID)' to 'int'
1> There is no context in which this conversion is possible
standby.cpp(36) : error C2065: 'nullptr' : undeclared identifier
standby.cpp(36) : error C2078: too many initializers
standby.cpp(48) : error C2065: 'DEVICE_NOTIFY_CALLBACK' : undeclared identifier
standby.cpp(47) : error C3861: 'PowerRegisterSuspendResumeNotification': identifier not found

Did you bother to read the manual before using that structure?
DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS structure (Windows)

Minimum supported client Windows 8 [desktop apps only]

> #define _WIN32_WINNT 0x0602
...
> I face errors while compiling code in vs2008
You need the LATEST SDK (one which supports Windows 8), and you also need Windows 8 as your platform.

Just pasting a single #define line into the start of your code doesn't magically transform the rest of your system into Windows 8.

Where can I find latest SDK for Win8?

Somewhere on microsoft,com I guess.
Use google for clues.