copyConstructor.cpp

// copy data of an object to another object using copy constructor

#include <iostream>

using namespace std;

class code
{
    int id;
    
    public:
    code(){}
    
    code(int a)
    {
        id = a;
    }
    code(code &x)
    {
        id = x.id;
    }
    
    void display(void)
    {
        cout<<id;
    }
};

int main()
{
    code A(100);
    code B(A);
    code C = A;
    code D;
    D = A;
    cout<<"\n id of A:";
    A.display();
    cout<<"\n id of B:";
    B.display();
    cout<<"\n id of C:";
    C.display();
    cout<<"\n id of D:";
    D.display();
    return 0;
}