cpp multidimensional vector

Question

I want to store theses string vectors as a 4 dimensional vector. It has been three days that I am searching and I can not decide wether use multidimensional vector,boost multi array ,array of struct ,... I am so new to cpp and they are so confusing.

vector < string >ID;
vector < string > firstName;
vector < string > lastName;
vector < string > address;
vector<vector<vector<vector<string> >>> person ;

what should I do for populating person ?

A multi-dimension vector is required if for instance you have multiple firstnames for an id and multiple lastnames for a firstname and multiple addresses for each lastname. If you just want to store the details of a person, then @hansmaad's suggestion is most suitable. — Abhishek Bansal, Nov 27 '13 at 09:31
Ok... so what the actual problem is? You want us to decide for you, which data structure should you use? — Spook, Nov 27 '13 at 13:26

HAL · Answer 1 · 2013-11-27T09:48:23.533

2

As suggested by @hansmaad

The following would be a simpler and better implementation(compared to mulch-dimensional vectors) for storing personal details in your program.

Define a person as:

struct person {
    std::string id;
    std::string first_name;
    std::string last_name;
    std::string address;
};

And define your vector as:

std::vector< person > people;

edited Nov 27 '13 at 09:48

answered Nov 27 '13 at 09:33

HAL

3,888
3
19
28

Spook · Accepted Answer · 2013-11-27T13:29:24.530

1

In your case, there is no point in creating multidimensional array. I'd rather try:

class Person
{
public:
    string Id;
    string firstName;
    string lastName;
    string address;
};

(...)

vector<Person> People;

// Adding
Person p;
p.Id = "1234";
People.push_back(p);

// Count
std::cout << "Currently you have " << People.size() << " people in the database";

// Access
Person p1 = People[0];

Edit: In response to comments

It's quite tough to answer the question without some specifics about your problem. From what little I know about it, I'd probably go into multi-class version:

class Id
{
public:
    int Value;
    std::vector<FirstName> Names;
}

class FirstName
{
public:
    string Value;
    std::vector<SecondName> SecondNames;
}

class SecondName
{
public:
    string Value;
    std::vector<Address> Addresses;
}

class Address
{
public:
    string Value;
}

edited Nov 27 '13 at 13:29

answered Nov 27 '13 at 09:32

Spook

25,318
18
90
167

I have multiple lastnames – user1876128 Nov 27 '13 at 10:53
@user1876128 You mean, that a single person can have multiple lastnames? – Spook Nov 27 '13 at 11:02
yes I just simplified the question in real case my variables are different and can have different values – user1876128 Nov 27 '13 at 12:44

score 0 · Answer 3 · answered Nov 27 '13 at 09:33

0

structure of arrays may be ! Or for a better readable and changeable code use a class

answered Nov 27 '13 at 09:33

chouaib

2,763
5
20
35

cpp multidimensional vector

3 Answers3