dynamically allocated objects may have constructors and destructors : new « Development « C++ Tutorial

1. C++ Tutorial
2. Development
3. new

#include <iostream>
#include <new>
#include <cstring>
using namespace std;
   
class balance {
  double cur_bal;
  char name[80];
public:
  balance(double n, char *s) {
    cur_bal = n;
    strcpy(name, s);
  }
  ~balance() {
    cout << "Destructing ";
    cout << name << "\n";
  }
  void get_bal(double &n, char *s) {
    n = cur_bal;
    strcpy(s, name);
  }
};
   
int main()
{
  balance *p;
  char    s[80];
  double  n;

  // this version uses an initializer
  try {
    p = new balance (1.1, "A");
  } catch (bad_alloc xa) {
    cout << "Allocation Failure\n";
    return 1;
  }
   
  p->get_bal(n, s);
   
  cout << s << "'s balance is: " << n;
  cout << "\n";
   
  delete p;
   
  return 0;
}