Memory exception with connection to Oracle

Hi,

When i am trying to execute the below code, getting the memory
exception " Unable to read memory". Can anybody suggest me of what can
be the problem?
Also the exception is only if a add a createconnection statement. For
connection to oracle from iSQLPLus i am using the same usr/pass
without hoststring and its working there.

Thanks,
Vinod K

#include "occi.h"
#include<stdio.h>
#include<string.h>
#include<conio.h>
using namespace oracle::occi;
main()
{
  Environment *env ;
  Connection *conn=env->createConnection("scott", "tiger","");
    printf("Done");
      getch();
}