Private data members are inaccessible to friend function

Question

I'm trying to write overloaded insertion and exertion operators but the functions aren't able to access the private members of the class Money.I have "include namespace std;" and "#include " but it won't let me access the private members (dollars and cents).

ostream & operator<<(ostream &osObject, Money &right)
{
    osObject << "Amount of money: $" << right.dollars << ".";
    osObject << right.cents;

    return osObject;
}

istream &operator>>(istream &isObject, Money &right)
{
    isObject >> right.dollars;
    isObject.ignore();
    getline(isObject, right.cents;

    return isObject;
}`

Header file:

#pragma once
class Money{
    // Friends
    friend ostream & operator<<(ostream, Money);
    friend istream & operator>>(istream, Money);
private:
    int dollars;
    int cents;
    void simplify();
//Some other stuff...

I'm getting errors such as: syntax error: missing ';' before '&' 'ostream' : 'friend' not permitted on date declarations missing type specifier- int assumed. C++ does not support default-int

Answer 1

Your function definition is

ostream & operator<<(ostream &osObject, Money &right)

Your prototype is

friend ostream & operator<<(ostream, Money);

These are not the same because the first takes an ostream reference argument, and the second uses a plain ostream object. You need to make these match:

friend ostream & operator<<(ostream &, Money &);

Answer 2

juanchopanza already gave the answer in his comment. Just in case you want to see it on action:

friend ostream & operator<<(ostream&, Money);
friend istream & operator>>(istream&, Money);

reference signs are missing from the operator arguments ostream and istream.