Question

I don't understand why I keep getting this error, How do I fix it?

In file included from Chrono. cpp: 3:0: Chrono. h:50:22: error: Chrono Date& Chrono operator++ must have an argumen t of class or enumerated type Date& operator++

Answer 1

you are defining an object which is not the member function of class Date.. Hence you should provide the object type as argument and then carryout member function operators in the function. You can't use d,y , m of the Date class in tjis function as it's not member function of Date,, Other way to do is declare operator++ as friend function of Date,but it also needs argument.

Given example

Date& operator++(Date &obj)
   {
       Date tmp;
       int d,y,m;
       d = obj.day();
       y = obj.year();
       m = obj.month();
       ++d;
       if (is_date == false)
       {
       d = 1;
       //if (m == dec)
       if ( m == 12)
       {
           //assign 1 for jan
       m = 1;
       ++y;
       }
       else
       {
       //m = obj.Month(int(m) + 1);
           obj.add_month(m + 1);
           m = obj.month();

       }
       }
       tmp.add_day(d);
       tmp.add_month(m);
       tmp.add_year(y);
       return tmp;
      
}