//prvt function
int String::first_diff(String s)const
{
	for (int i = 0; i < STRING_MAX; i++)
	{
	    if (c[0] == '\0' || s[0] == '\0' || c[0] != s[0])
               return i;
	}
	
	//should never get here...
	return 0;
}

//operator overloading
bool String::operator == (String s)const
{
	if (this->first_diff(c) == c.size() && this->first_diff(s) == s.size())
	   return true;
	
	return false;
}