#include <iostream>
using namespace std;

int main()
{
  int a = 10;
  int *p;
  p = &a;
  
  cout << "value of a : " << a << endl;
  cout << "using pointer : " << *p << endl;
  cout << "address of a : " << &a << endl;
  cout << "address of a using pointer: " << p << endl;
  
  return 0;
}