struct datetime gunSonraTarihNe(struct datetime dt,int gun) 
{ 
     struct datetime iterator; 
     iterator=dt; 
     while(gun>0) 
     { 
          subat_Kontrol(iterator); 
          gun--; 
          if(iterator.day==aylar[iterator.month-1]) 
          { 
               iterator.day=1; 
               if(iterator.month==12) 
               {      
                    iterator.month=1; 
                    iterator.year++; 
               } 
               else 
                    iterator.month++; 
          } 
          else if(iterator.day<aylar[iterator.month-1]) 
               iterator.day++;      
     } 
     return iterator; 
}