I cannot input enum class value

I have defined a enum class:

Code:

---

enum class Genre
{
        fiction, nonfiction, periodical, biography, children
};

---

And another class:

Code:

---

class Book
{
public:
        string f_title() { return title; }
        string f_author() { return author; }
        string f_isbn() { return isbn; }
        Genre f_genre() { return g; }
        int f_day();
        int f_month();
        int f_year();
        Book(string tit, string aut, string isbn, Genre g);
        Book(string tit, string aut, string isbn);
        Book();
        class Invalid {};
private:
        string isbn, title, author;
        int day, month, year;
        Genre g;
};

---

I am stuck because I am not able to directly input values because I am not able to correctly set helper function. I had to create two different ones:

Code:

---

istream& operator>>(istream& is, Book& n)
{
        string title, author, isbn;

        getline(is,title);
        getline(is,author);
        getline(is,isbn);
        isbn.resize(7);

        if (!is) return is;

        n = Book{ title,author,isbn };

        return is;
}

istream& operator>>(istream& is, Genre& g)
{
        int i;
        is >> i;
        g = (Genre)i;

        return is;
}

---

but my program skips the Genre helper function and returns to me the default value "N/A".

How can I fix it?

Thanks!

Where do you invoke stream extraction for a type Genre?

Quote:

---

Originally Posted by 2kaud

Where do you invoke stream extraction for a type Genre?

---

Do you mean this?

Code:

---

ostream& operator<<(ostream& os, Book& n)
{
        return os << "Title: " << n.f_title() << endl
                << "Author: " << n.f_author() << endl
                << "ISBN: " << n.f_isbn()  << endl
                << "Genre: " << n.f_genre() << endl;
}

---

I solved the issue!

I have split out the helper function in two distinct, then in main() I have separated cin creating a specific object for Genre enum class. It works perfectly! Thank you anyway :D