C++ Adapter Design Pattern

AdapterDesignPattern.cpp

#include <algorithm>
#include <cstdlib>
#include <iostream>
#include <list>
#include <memory>
using namespace std;

// Legacy account
class LegacyAccount {
	int no;

  public:
	LegacyAccount(int no) { this->no = no; }

	void legacyAccountPrint()
	{
	cout << "Display legacy account details " << no << endl;
	}
};

// Renewed interface
class RenewedAccountIntf {
  public:
	virtual ~RenewedAccountIntf();
	virtual void display() = 0;
};

RenewedAccountIntf::~RenewedAccountIntf() {}

// Renewed account object
class Account : public RenewedAccountIntf {
	string no;

  public:
	Account(string no);

	void display();
};
Account::Account(string no) { this->no = no; }

void Account::display()
{
	cout << "Display renewed account details " << no << endl;
}
// Legacy account adapter to renewed interface
class LegacyAccountAdapter : public LegacyAccount, public RenewedAccountIntf {
  public:
	LegacyAccountAdapter(string no);

	void display();
};

LegacyAccountAdapter::LegacyAccountAdapter(string no)
	: LegacyAccount(atoi(no.c_str()))
{
}

void LegacyAccountAdapter::display() { this->legacyAccountPrint(); }

// Test program
int main()
{
	list<shared_ptr<RenewedAccountIntf>> accountList;
	accountList.push_back(make_shared<Account>("accountholder 1"));
	accountList.push_back(make_shared<Account>("accountholder 2"));
	accountList.push_back(make_shared<LegacyAccountAdapter>("12345"));

	while (!accountList.empty()) {
	shared_ptr<RenewedAccountIntf> obj = accountList.front();
	obj->display();
	accountList.pop_front();
	}

	accountList.erase(accountList.begin(), accountList.end());

	for (auto obj : accountList) {
	obj->display();
	}
	return 0;
}