Friend ostream operator << wont acces private fields

Question

It just wont acces private fields

.hpp:
private:
    std::string model;

public:
    Piekarnik &operator << (const Ciasto &ciasto);
    friend std::ostream &operator<<(std::ostream &os, const Ciasto &ciasto);


.cpp:
Piekarnik &Piekarnik::operator<<(const Ciasto &ciasto)
{
    append(ciasto);
    return *this;
}
ostream &operator<<(ostream &os, const Piekarnik &piekarnik) // dwuargumentowy;
{
      os<<"Piekarnik (model: "<<piekarnik.model<<", temperatura: " << piekarnik.obecnyProgram.temperatura <<", pieczenie: " << EnumToString(piekarnik.obecnyProgram.pieczenie) << ", wlozone ciasto: " << EnumToString(piekarnik.wlozoneCiasto.rodzaj);
      return os<<")";
}

error: 'std::string Piekarnik::model' is private

Check your declaration and definition signature, it's not matched. Here is the declared `friend std::ostream &operator<<(std::ostream &os, const Ciasto &ciasto);` — Danh, Dec 16 '15 at 00:22

score 0 · Accepted Answer · answered Dec 16 '15 at 00:24

0

Change your friend declaration to

friend std::ostream &operator<<(std::ostream &os, const Piekarnik&);

answered Dec 16 '15 at 00:24

Danh

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worked! just one more class and same problem, gonna try to do it by myself – foxale Dec 16 '15 at 00:27
error: 'unsigned int Program::temperatura' is private| its in another class Program, what should I type there to make it work perfectly? – foxale Dec 16 '15 at 00:31
Use a getter in class `Program` or put the same friend declaration to class `Program` or just mark it public member – Danh Dec 16 '15 at 00:32
same friend declaration: Piekarnik not defined (no doubts) alright, thanks – foxale Dec 16 '15 at 00:34
Forward declaration for class `Piekarnik` – Danh Dec 16 '15 at 00:35

Friend ostream operator << wont acces private fields

1 Answers1