Thread: Overloaded << operator

Yes it is the correct way. If you'd tell what errors you get, we might even be able to tell you why.
Kurt

I get "In file included from Set.cpp"
"expected constructor, destructor, or type conversion before '&' token"
"expected `,' or `;' before '&' token"

What do I have to include?

could be <iostream> or the header that declares Set.
Kurt

The program works fine just before I included the 2 code snippets from above. I had it printing with cout and I just wanted to get the overloading code right before I actually used it in my driver.

I still think it should be

Code:

#include <iostream>
using std::ostream;

in Set.h
Kurt

Thank you so much! That works.

Hate to bother you again, but is there any easy explanation for why it gives the error "undefined reference to 'Set::displaySet()'" when i declare that method as a const. It works when it isn't const.

I get this error when I forget to add the const in the implementation.
Kurt

Hmm.

Code:

void displaySet() const;

Code:

void Set::displaySet() const
{
     cout << "{";
     for(int i=1;i<=myList.getLength();i++)
     {
           cout<<getValue(i);
           if(i!=myList.getLength())
                cout<<",";
     }
     cout << "}";
}

I changed both to const. I don't have to do anything differently when I use it throughout my cpp file do I?

Don't think so. What's the problem ?
Kurt

I changed displaySet to const in both the .h and .cpp and now it gives me the error "undefined reference to 'Set::displaySet()'".

Don't understand why. Have you rebuilt the whole project.
Kurt

You really are my hero. It worked.

Happens quite often. Most of the IDE's are not smart enough to check headers for dependancies.
Kurt