#include <iostream>
#include <limits>

using namespace std;

void wait()
{
    cin.ignore(numeric_limits<streamsize>::max(), '\n');
}

class foo
{
public:
    foo () {}
    foo (int newnum)
    {
        num = newnum;
    }

    void printthis()
    {
        cout << this;
        wait();
    }

    int num;
};

int main()
{
    foo myfoo, myfoo2;

    foo *ptrMyfoo = &myfoo, *ptrMyfoo2 = &myfoo2;

    cout << "This is the address of the first instance:" << endl << ptrMyfoo << endl;
    cout << "\nWhen calling foo::printthis() using the instance at " << ptrMyfoo << endl;
    cout << "the this pointer returns ";
    myfoo.printthis();

    cout << "\n\nThis is the address of the second instance:" << endl << ptrMyfoo2 << endl;
    cout << "\nWhen calling foo::printthis() using the instance at " << ptrMyfoo2 << endl;
    cout << "the this pointer returns ";
    myfoo2.printthis();
}