함수 개체, 회원 및 회원 컬렉션 구현[C++]

 

/* https://ehpub.co.kr
   C++ 예제 - 언제나 휴일
   함수 개체 - 회원 컬렉션
   연산자 중복 정의 및 개체 출력자 포함
*/
#include <string>
#include <iostream>
using namespace std;

class Member
{
    int num;
    string name;
public:
    Member(int num, string name)
    {
        this->num = num;
        this->name = name;
    }
    int GetNum()const
    {
        return num;
    }
    string GetName()const
    {
        return name;
    }
};

ostream& operator<<(ostream& os, const Member* data)
{
    os << "번호:" << data->GetNum() << " 이름:" << data->GetName();
    return os;
}

class IEqual
{
public:
    virtual bool operator()(Member* data) = 0;
};

class MemberCollection
{
    Member** base;
    const int capacity;
    int count;
public:
    MemberCollection(int capacity) :capacity(capacity)
    {
        base = new Member * [capacity];
        count = 0;
    }
    ~MemberCollection()
    {
        delete[] base;
    }
    bool PushBack(Member* data)
    {
        if (IsFull())
        {
            return false;
        }
        base[count] = data;
        count++;
        return true;
    }
    bool IsFull()const
    {
        return count == capacity;
    }
    bool IsAvailIndex(int index)const
    {
        return (index >= 0) && (index < capacity);
    }
    int GetCount()const
    {
        return count;
    }
    Member*& operator[](int index)
    {
        if (IsAvailIndex(index) == false)
        {
            throw "사용할 수 없는 인덱스";
        }
        return base[index];
    }
    Member* FindIf(IEqual& ie)
    {
        for (int i = 0; i < count; i++)
        {
            if (ie(base[i]))
            {
                return base[i];
            }
        }
        return NULL;
    }
};


class EqualNum :
    public IEqual
{
    int num;
public:
    EqualNum(int num)
    {
        this->num = num;
    }
    virtual bool operator()(Member* data)
    {
        return num == data->GetNum();
    }
};

int main()
{
    MemberCollection dc(100);
    dc.PushBack(new Member(3, "홍길동"));
    dc.PushBack(new Member(2, "강감찬"));
    dc.PushBack(new Member(6, "을지문덕"));
    dc.PushBack(new Member(7, "한석봉"));

    int count = dc.GetCount();
    for (int i = 0; i < count; i++)
    {
        cout << dc[i] << endl;
    }

    cout << "검색할 회원 번호:";
    int num;
    cin >> num;
    EqualNum en(num);
    Member* member = dc.FindIf(en);
    if (member != NULL)
    {
        cout << member << endl;
    }
    else
    {
        cout << "찾지 못하였음" << endl;
    }

    for (int i = 0; i < count; i++)
    {
        delete dc[i];
    }

    return 0;
}