Search:

With this class as it currently is, you don't need to provide either an assignment or a copy constructor as the default ones provided by the compiler are sufficient because no dynamic storage is...

The declaration for an addition function for the class would be


Cartesian operator+(const Cartesian& rh);


This would allow two classes of type Cartesian to be added. ie


coord3 =...

You are trying to make things more complicated than they are.



#include <iostream>
using namespace std;

class Cartesian
{
private:

double c;
double d;
x=c;
y=d;


Just remove these lines as c and d aren't used. You can't do an assignment when the compiler expects a definition/declaration.