Watch for allocation errors using both old-style and new-style error handling. : New « Language « C++

1. C++
2. Language
3. New

Watch for allocation errors using both old-style and new-style error handling.

#include <iostream>
#include <new>
using namespace std;

class MyClass {
  static int count;
public:
  MyClass() { 
     count++; 
  }
  ~MyClass() { 
     count--; 
  }
  int getcount() { 
     return count; 
  }
};

int MyClass::count = 0; 

int main()
{
  MyClass object1, object2, object3;

  cout << object1.getcount() << " objects in existence\n";

  MyClass *p;

  try {
    p = new MyClass; 
    if(!p) { 
      cout << "Allocation error\n";
      return 1;
    }
  } catch(bad_alloc ba) { 
      cout << "Allocation error\n";
      return 1;
  }

  cout << object1.getcount();
  cout << " objects in existence after allocation\n";

  delete p;

  cout << object1.getcount();
  cout << " objects in existence after deletion\n";

  return 0;
}


           
       

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