Help with warrock premium hack

#include <windows.h>
#include <stdio.h>

#define Premium_OffSet 0x00000374 

DWORD *ingame= (DWORD*)Playerpointer;
DWORD *outgame= (DWORD*)Serverpointer;

void premium () // Gold Premium
{
DWORD dwPlayerPtr = *(DWORD*)Serverpointer;
if(dwPlayerPtr != 0)
{
*(long*)(dwPlayerPtr+OFS_PREMIUM) = 3, 10; // 1 = bronze  2 = silver 3 = gold
}
}

void HackThread() 
{
for(;; ) 
{
if(*ingame)
{
Premium();
}
if(*outgame)
{
Premium();
}
Sleep(200);
}
}

BOOL WINAPI DllMain(HINSTANCE hModule, DWORD dwReason, LPVOID lpvReserved)
{
	if(dwReason == DLL_PROCESS_ATTACH)
	{

            CreateThread(0, 0, (LPTHREAD_START_ROUTINE)HackThread, 0, 0, 0);
	}
	return TRUE;
}

 warning C4627: '#include <stdio.h>': skipped when looking for precompiled header use
1>        Add directive to 'stdafx.h' or rebuild precompiled header

fatal error C1010: unexpected end of file while looking for precompiled header. Did you forget to add '#include "stdafx.h"' to your source?

fatal error C1010: unexpected end of file while looking for precompiled header. Did you forget to add '#include "stdafx.h"' to your source?