// new version of the combo class that stores a pointer to a string instead of
// a stack-allocated string

#include <iostream>
#include <string>

using namespace std;

class combo {
public:
    combo(int initValue = 0, string initText = "foo") {
        value = initValue;
        text = new string(initText);
        cout << "in main constructor" << endl;
    }
    
    int get_value() const {
        return value;
    }

    const string & get_text() const {
        return *text;
    }

    combo(const combo & rhs) {
        value = rhs.value;
        // the next line makes a new string instead of just copying the pointer
        text = new string(*rhs.text);
        cout << "in copy constructor" << endl;
    }

    ~combo() {
        delete text;
        cout << "in destructor" << endl;
    }

    combo & operator=(const combo & rhs) {
        if (this != &rhs) {
            value = rhs.value;
            // first we have to delete the string that this currently points to
            delete text;
            // then we can allocate a new string with a copy of the text
            text = new string(*rhs.text);
        }
        cout << "in assignment operator" << endl;
        return *this;
    }

private:
    int value;
    string * text;
};

int main() {
    combo c1(14, "bar");
    cout << "c1: " << c1.get_value() << " " << c1.get_text() << endl;
    combo c2(18);
    cout << "c2: " << c2.get_value() << " " << c2.get_text() << endl;
    combo c3;
    cout << "c3: " << c3.get_value() << " " << c3.get_text() << endl;
    combo c4 = c2;
    cout << "c4: " << c4.get_value() << " " << c4.get_text() << endl;
    combo c5;
    c5 = c1;
    cout << "c5: " << c5.get_value() << " " << c5.get_text() << endl;

    return 0;
}