Function compare

Exercises/Modules/Chapter 12/Soln12_04/Integer.cpp:38–46

friend compare function

// friend compare function
int compare(const Integer& obj1, const Integer& obj2)
{
  if (obj1.m_value < obj2.m_value)
    return -1;
  else if (obj1.m_value == obj2.m_value)
    return 0;
  else
	  return 1;
}

// non-friend compare function
int nonFriendCompare(const Integer& obj1, const Integer& obj2)