C++ Class Object Collection

Hi,

I have a simple class object:

Code:

---

#include <iostream> //include iostream header
#include <string> //include string header

enum gender {Male = 1, Female = 2}; //enumeration of gender type

using namespace std; //use the std namespace from this execution point forwards

class Person //define Person class object
{
        protected:
                string m_FirstName; //internal first name storage variable
                string m_LastName; //internal last name storage variable
                int m_Age; //internal age storage variable
                gender m_Gender; //internal gender storage variable

        public:
                Person(); //contructor
                ~Person(); //destructor

                //member functions
                string GetFirstName(void) const; //function for getting first name
                string GetLastName(void) const; //function for getting last name
                int GetAge(void) const; //function for getting age
                gender GetGender(void) const; //function for getting gender

                void SetFirstName(string s_FirstName); //function for setting first name
                void SetLastName(string s_LastName); //function for setting last name
                void SetAge(int s_Age); //function for setting age
                void SetGender(gender s_Gender); //function for setting gender
};

Person::Person(void) //Person Constructor
{
        //notify of construction
        cout << "Constructing Person Object." << endl;
        return;
};

Person::~Person(void) //Person Destructor
{
        //notify of desruction
        cout << "Destructing Person Object." << endl;
        return;
};

string Person::GetFirstName(void) const //function for getting first name
{
        //return internal first name storage variable
        return m_FirstName;
};

string Person::GetLastName(void) const //function for getting last name
{
        //return internal last name storage variable
        return m_LastName;
};

int Person::GetAge(void) const //function for getting age
{
        //return internal age storage variable
        return m_Age;
};


gender Person::GetGender(void) const //function for getting gender
{
        //return internal gender storage variable
        return m_Gender;
};

void Person::SetFirstName(string s_FirstName) //function for setting first name
{
        m_FirstName = s_FirstName;
        return;
};

void Person::SetLastName(string s_LastName) //function for setting last name
{
        m_LastName = s_LastName;
        return;
};

void Person::SetAge(int s_Age) //function for setting age
{
        m_Age = s_Age;
        return;
};

void Person::SetGender(gender s_Gender) //function for setting gender
{
        m_Gender = s_Gender;
        return;
};

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If you have programmed with Visual Basic you will probably know that you can create object collections and use the For...Each language construct to enumerate through a VB Object Collection.

In the very same way, I am looking for the "proper" way of doing this in C++.

The above Person object needs to be implemented in a proper collection, so that I can use methods such as Add GetItem and Remove and clear to manage a collection of Person objects as the application is running. Also i need to use a construct similar to the For..Each contruct so then I can output each record to a text file.

Thanks

VD

C++ has it's own for_each, along with several containers that do what you require. Here's a cutdown example of your class using a std::vector -

Code:

---

#include <iostream> //include iostream header
#include <string> //include string header
#include <vector>
#include <algorithm>

using namespace std; //use the std namespace from this execution point forwards

class Person //define Person class object
{
protected:
        string m_FirstName; //internal first name storage variable
        string m_LastName; //internal last name storage variable
       
public:
        Person(); //contructor
        ~Person(); //destructor //member functions
        void SetLastName(string s_LastName); //function for setting last name
        void SetFirstName(string);
       
        friend ostream& operator << (ostream& os,const Person& p)
        {
                return os << p.m_FirstName << ' ' << p.m_LastName << " ,etc" << '\n';
        }
};

Person::Person(void) //Person Constructor
{
        //notify of construction
        cout << "Constructing Person Object." << endl;
};

Person::~Person(void) //Person Destructor
{
        //notify of desruction
        cout << "Destructing Person Object." << endl;
};


void Person::SetFirstName(string s_FirstName) //function for setting first name
{
        m_FirstName = s_FirstName;
        return;
};

void Person::SetLastName(string s_LastName) //function for setting last name
{
        m_LastName = s_LastName;
        return;
};

template <class T>
class print
{
public:
        ostream& os;
        print(ostream& _os):os(_os){}
        void operator ()(T& type)
        {
                os<< type;
        }
};
       

int main()
{
        Person me;
        me.SetFirstName("Mike");
        me.SetLastName("Tyson");
       
        Person you;
        you.SetFirstName("Lennox");
        you.SetLastName("Lewis");
       
        vector<Person> peeps;
        peeps.push_back(me);
        peeps.push_back(you);
        //output to file by creating ofstream object rather
        //than using cout
        for_each(peeps.begin(),peeps.end(),print<Person>(cout));
        return 0;
}

---

This doesn't have anything to do with your question but I thought I would share anyway. On my getXXX and setXXX I try to do inline because it gets alot cleaner like so

Code:

---

void Person::SetLastName(string s_LastName) m_LastName = s_LastName;
void Person::SetFirstName(string s_FirstName) m_FirstName = s_FirstName;

---

Just what I needed.

Thank you very much Sorensen.

:)