Date :: addMonths - Add months to date value
The number of months passed in iMonths is added to the date value. Year may change, when month exceeds 12 . Usually, day remains unchanged, but will be adjusted, when the new month value does not have the resulting day
Date date(31,1,2009);
date.addMonths(1); // day becomes: 2009-28-2
Return value: Date ( odaba::Date & )
The date contains day, month and year, but not the time.