#include <iostream>

using namespace std;

int main()
{
   int x;
   int y;
   int z;

   int * a;
   int * b;
   int * c;

   x = 5;
   a = &x;
   b = a;
   c = a;

   cout << "x = " << x << endl;
   cout << "*a = " << *a << endl;
   cout << "*b = " << *b << endl;
   cout << "*c = " << *c << endl;

   x = 10;

   cout << "x = " << x << endl;
   cout << "*a = " << *a << endl;
   cout << "*b = " << *b << endl;
   cout << "*c = " << *c << endl;

   return 0;
}