// loose pointer problem 
// mikhail nesterenko
// 11/8/99

main(){
   int *p;

   p=new int(1); // creates memory location
   *p=2;        // uses memory location  
   delete p;     // deallocates memory location

   // is it safe to use p now?
   // *p=10;
   // p is a loose pointer

   p=new int(3);  // p is no longer loose
   int *q=p;

   (*q)++;  // p and q can be used

   delete q; // now both p and q are loose

   // cannot do either
   // *p=3;
   // or
   // *q=4;
}