Exercise 2/24

//This code is not working as expected.
//Fix the code and reply with your edited code.
#include <iostream>
using namespace std;
class Line {
public:
    int getNum() const;
    Line(int value); // overloaded constructor
    Line(const Line &obj); // copy constructor
    ~Line(); // destructor
    Line &operator = (const Line& right) {
        cout << "Assignment operator." << endl;
            if (this != &right) {
                delete ptr;
                ptr = new int;
                *ptr = *right.ptr;
            }
            return *this;
    }
private:
    int *ptr;
};

// Member functions definitions
Line::Line(int num) {
    cout << "Overloaded constructor." << endl;
    ptr = new int;
    *ptr = num;
}
Line::Line(const Line &obj) {
    cout << "Copy constructor." << endl;
    ptr = new int;
    *ptr = *obj.ptr; // copy the value
}
Line::~Line() {
    cout << "Freeing memory!" << endl;
    delete ptr;
    ptr = nullptr;
}

int Line::getNum() const {
    return *ptr;
}
void displayNum(Line obj) {
    cout << "value of num : " << obj.getNum() << endl;
}

// Main function for the program
int main() {
    Line line1(10);
    Line line2 = line1;
    Line line3(30);
    line3 = line2;
    displayNum(line1);
    return 0;
}