memory allocation and pointer

new

Employee* boss = new Employee("Lin, Lisa", 68000);

delete

delete(boss);

the uses of pointer

1.optional attribute

class Department
{
 . . .
private:
   string name;
   Employee* receptionist;
};is better than 

class Department // modeled without pointer
{
 . . .
private:
   string name;
   bool has_receptionist;
   Employee receptionist;
};2.sharing