#include <iostream>

using namespace std;

int main()
{
   int x;
   int * a;

   x = 5;
   a = &x;

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

   x = 10;

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

   return 0;
}