// basic use of dynamic memory
// Michael L. Collard
// 11/04/99

#include <iostream>

int main() {
   int *pn=nullptr; //declaring a pointer
   
   pn = new int(4); // pn points to a new integer

   *pn = 5; 	// can change that new integer
   delete pn; 	// now will get rid of it

   // very dangerous to do since the integer no longer exists
   // cout << *pn << '\n';
}