C / C++ / MFC

COleDateTime[] CMyClass::ModifyDates(COleDateTime date1, COleDateTime date2)
{
   ChangedDates[0] = date1;
   ChangedDates[1] = date2;
   return ChangedDates;
}

int CMyClass::CalcNumberOfPeriod(COleDateTime StartDate,COleDateTime EndDate)
{
   int iNumberOfPeriod;
   ModifyDates(StartDate,EndDate); // you actually don't need ModifyDates to return the array
   //calculate the difference using ChangedDates[0] and ChangedDates[1] - they will now contain your StartDate and EndDate.
.
.
.
return iNumberOfPeriod;
}

void CMyClass::ModifyDates(COleDateTime* pDates)
{
   // pDates points to an array of two dates, pDates[0] and pDates[1]
   // do whatever modification is needed.
}

int CMyClass::CalcNumberOfPeriod(COleDateTime StartDate COleDateTime EndDate, periodtype dt)
{
   COleDateTime Dates[2];
   Dates[0] = StartDate;
   Dates[1] = EndDate;
   ModifyDates(Dates); // Dates i type COleDateTime*. Dates[0] and Dates[1] is type COleDateTime
   int iPeriods;
   // calculate the number of periods between the dates
   iPeriods = .....
   return iPeriods;
}

COleDateTime* CMyClass::AllocAndModifyDates(COleDateTime date1, COleDateTime date2)
{
   COleDateTime* pDates = new COleDateTime[2];
   pDates[0] = date1;
   pDatse[1] = date2;
   // do the modification
   return pDates;
}

int CMyClass::CalcNumberOfPeriod(COleDateTime StartDate, COleDateTime EndDate, periodtype dt)
{
   COleDateTime* pDates = AllocAndModifyDates(StartDate, EndDate);
   int iPeriods;
   // do the calculation of number of periods
   // now we're done using the dates, let's delete them
   delete[] pDates;
   return iPeriods;
}

delete[] Date;

while(i<10)
{
   while(j<10) // gets called for each instance of i
   {

   }
}

CArchive& operator <<(CArchive & ar, const CObject* pOb);
void CArchive::WriteObject(const CObject* pOb);