Use a class defined vector to store "paired" data in each element

[whodgson]

The exercise from my book reads:
'Define a class named Name_value that holds a string and a value (int)and a vector named Name_value. Give it a constructor. Store name and value "pairs" in each vector element instead of using two separate vectors... as were
used in ex 4_19.' The following is the debris left from my many previous attempts. I would appreciate some specific direction on how to proceed as I'm stumped. I have Googled extensively without joy. There is no urgency.

#include<iostream>
#include<vector>
using namespace std;

class Name_value
{
public:
       string name;
       int value;
       Name_value (vector<Name_value>v);      
      
      
};      

int main()
{
Name_value  v;           

system("pause");
return 0;
}

[Banfa]

I think this is a very poorly worded question and I suspect it means

Define a class named Name_value that holds string and value (int) pairs using a vector named Name_value. Give it a constructor and a copy constructor. Store name and value "pairs" in each vector element instead of using two separate vectors.

However this would end up just being a very simple wrapper for a vector storing the relevant type, i.e. no real need for this class.

[whodgson]

Thanks Banfa..Yes I think you are quite correct with your restatement of the question(but I can`t comment on the need for a copy constructor). Are you saying that it is not possible to write some code that achieves the basic requirement of storing two different (primitive) types under one class name (type) into one vector element?

[Banfa]

No It is possible, I am saying that vector does such a good job there seems little point wrapping another class round the vector.

Instead of

class Name_value
{
public:
    string name;
    int value;
    Name_value (vector<Name_value>v);      
};

I personally would have

struct Name_value
{
    string name;
    int value;
};

I know classes and structs are the same thing but I tend to use struct where the data is public especially if there are not methods on the structure (i.e. where a classic C structure can be used).

Then

std::vector<Name_value> Name_value;

Appears to solve the question, no need for a wrapper class.

[whodgson]

Thanks Banfa. Will do some work using your approach.