#include <iostream>
using namespace std;

void a(int *p1, int *p2)
{
  
  cout << endl << "Inside a()" << endl << endl ;

  cout << "p1 = " << p1 << " and &p1 = " << &p1 << " and *p1 = " << *p1 << endl;
  cout << "p2 = " << p2 << " and &p2 = " << &p2 << " and *p2 = " << *p2 << endl;

  p1 = p2;

  *p1 = 3;
  *p2 = 4;

  cout << endl << "Inside a() - after setting p1 to p2" << endl << endl ;

  cout << "p1 = " << p1 << " and &p1 = " << &p1 << " and *p1 = " << *p1 << endl;
  cout << "p2 = " << p2 << " and &p2 = " << &p2 << " and *p2 = " << *p2 << endl;
}

int main()
{
  int i, j, *ptr1, *ptr2;

  ptr1 = &i;
  ptr2 = &j;
  i = 5;
  j = 6;

  cout << "Before calling a()" << endl << endl ;
  
  cout << "i = " << i << " and &i = " << &i << endl;
  cout << "j = " << j << " and &j = " << &j << endl;
  cout << endl;
  cout << "ptr1 = " << ptr1 << " and &ptr1 = " << &ptr1 << " and *ptr1 = " << *ptr1 << endl;
  cout << "ptr2 = " << ptr2 << " and &ptr2 = " << &ptr2 << " and *ptr2 = " << *ptr2 << endl;

  a(ptr1, ptr2);

  cout << endl << "After calling a()" << endl << endl ;
  
  cout << "i = " << i << " and &i = " << &i << endl;
  cout << "j = " << j << " and &j = " << &j << endl;
  cout << endl;
  cout << "ptr1 = " << ptr1 << " and &ptr1 = " << &ptr1 << " and *ptr1 = " << *ptr1 << endl;
  cout << "ptr2 = " << ptr2 << " and &ptr2 = " << &ptr2 << " and *ptr2 = " << *ptr2 << endl;

  return 0;
}