Assignment Operator 2

• First attempt: same as copy constructor

IntArray& IntArray::operator =(const IntArray& b)
{
  size_ = b.size_;
  data_ = new int [size_];
  // check for failed allocation
  for (size_t i = 0; i < size_; ++i)
    data_[i] = b.data_[i];
  return *this;
}

• Problem: What happens to memory already allocated to a ?