c++ Undeclared identifier inside operator function - c++

Question

I'm creating a "date" class in c++, which holds day, month and year variables and bunch of operator functions to use it with.
I have a date.h header and date.cpp for my class and one of the operator functions in date.cpp is giving me bunch of errors.
date.cpp
(I want this operator-function to count days added and return a new date object and avoid changes to the original date object.)
date date::operator+(long days) const{
date dTemp( date.getDay(), date.getMonth(), date.getYear() );
for(int i=0;i<days;i++){
//If days go over a months day count.
if(dTemp.getDay() >= daysInMonth[dTemp.getMonth()]){
dTemp.setDay(1);
if(dTemp.getMonth() < 12){
dTemp.setMonth(dTemp.getMonth() + 1);
}
else{
//Changing a year.
dTemp.setMonth(1);
dTemp.setYear(dTemp.getYear() + 1);
}
}
else{
dTemp.setDay(dTemp.getDay() + 1);
}
}
return dTemp;
}
Errors:
1>h:\c++\teht21\teht20\date.cpp(74): error C2143: syntax error : missing ')' before '.'
1>h:\c++\teht21\teht20\date.cpp(74): error C3484: syntax error: expected '->' before the return type
1>h:\c++\teht21\teht20\date.cpp(74): error C2061: syntax error : identifier 'getDay'
1>h:\c++\teht21\teht20\date.cpp(79): error C2065: 'dTemp' : undeclared identifier
1>h:\c++\teht21\teht20\date.cpp(79): error C2228: left of '.getDay' must have class/struct/union
1> type is ''unknown-type''
Line 74 is:
date dTemp( date.getDay(), date.getMonth(), date.getYear() );
Any help is hugely appreciated.
If you need to see more code, let me know.

Answer 1

If getDay(), getMonth(), getYear() are member functions and you want to call them on this then change:
date dTemp( date.getDay(), date.getMonth(), date.getYear() );
to:
date dTemp( getDay(), getMonth(), getYear() );

Answer 2

Probably you want to call static methods here:
date dTemp( date.getDay(), date.getMonth(), date.getYear() );
So:
date dTemp( date::getDay(), date::getMonth(), date::getYear() );