#include "account.h"
account::account() : balance(0) {
  strncpy(name, "none", 32);
  name[31] = '\0';
  cout <<"account constructor called" <<endl;
}
checking::checking() : charges(5) {
  cout <<"checking constructor called" <<endl;
}
savings::savings() : interest(0) {
  cout <<"savings constructor called" <<endl;
}
After the client saying:   checking c;
             savings s;
account constructor called
checking constructor called
account constructor called
savings constructor called