bool operator == (const Friend &other) const;
bool operator < (const Friend &other) const;

bool Friend::operator == (const Friend &other)const{
	bool isEqual = false;
	if (this->name == other.name &&
		this->age == other.age&&
		this->phoneNr == other.phoneNr){
		isEqual = true;
	}

	return isEqual;
}
bool Friend::operator < (const Friend &other) const{
	bool isLesserThan = false;
	if (this->age < other.age){
		isLesserThan = true;
	}
	return isLesserThan;
}