Question

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Problem Solved, thank you all for your help!

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I’ve run into a problem that i can’t seem to figure out.

I am trying to overload the ostream operator as a friend function in order to be able to print out the member data of that object, and i can’t seem to get it to work.

This is what i got so far:

.h file:

Class TestIt:
{
public:
TestIt();
TestIt(int a, b);

friend ostream& operator <<(ostream& outputStream, const TestIt& a);

Private:
int NUMBER1;
int NUMBER2;
};

.cpp file:

ostream& operator <<(ostream& outputStream, const TestIt& a)
{
 outputStream << a.NUMBER1 << " " << a.NUMBER2;

return(outputStream);
}

What i am trying to do is, pass in an object in ostream, then output its member data.
The error that i am receiving is that

“the member TestIt::NUMBER1 declared in TestIt.h is inaccessible.

and same error also exists with my other member data.

Why would that be?

Thank you for your help.

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Here’s a whole program that i just wrote, giving me the same error:

TestClass.cpp

#include "TestClass.h"
#include <iostream>

using namespace std;

TestClass::TestClass(int a, int b)
{
    age = a;
    whole = b;
}

int TestClass::GetAge() const
{
    return(age);
}

ostream& operator <<(ostream& outputStream, const TestClass& t1)
{
    t1.whole;
    t1.age;

    return(outputStream);
}

TestClass.h

#ifndef TestClass_H
#define TestClass_H

class TestClass
{

public:
    TestClass(int a, int b);
    int GetAge() const;

    friend ostream& operator <<(ostream& outputStream, const TestClass& t1);

private:
    int whole;
    int age;

#endif

Answer 1

The operator<< that you’ve defined and the operator<< that you’ve friended aren’t the same name. Are you using namespaces?