// This program demonstrates the operation of the default copy constructor.
#include <iostream>
using namespace std;

class Address
{
  private:
    string street;
  public:
    Address()           //constructor
    {
        street = "";
    }
    Address(string st)  //constructor
    {
        setStreet(st);
    }
    void setStreet(string st)
    {
        street = st;
    }
    string getStreet()
    {
        return street;
    }
};

int main()
{
    // Mary and Joan live at same address.
    Address mary("123 Main St");    //invokes constructor
    Address joan = mary;            //invokes the dafault copy constructor
    cout << "Mary lives at " << mary.getStreet() << endl;
    cout << "Joan lives at " << joan.getStreet() << endl << endl;

    // Now Joan moves out.
    joan.setStreet("1600 Pennsylvania Ave");
    cout << "Now Mary lives at " << mary.getStreet() << endl;
    cout << "Now Joan lives at " << joan.getStreet() << endl;

    return 0;
}