First CPP attempts

box.cpp

#include <iostream>
#include <map>

using namespace std;


struct Card {
    string name;
};

struct Box {
    int sz;
    string name;
    map <string, Card> cards;
};

void printCards(Box box) {
    cout << "In print cards." << endl;
    typedef std::map< string, Card >::iterator Iter;
    for(Iter iter = box.cards.begin(); iter != box.cards.end(); ++iter) {
        cout << "IN LOOP" << endl;
        cout << iter->first << endl;
    }
}

void createCard(Box box){
    string name;
    //char type;
    //char color;
    cout << "What is the cards name? ";
    cin >> name;

    Card card;
    card.name = name;
    box.cards[name] = card;
}

Box createBox() {
    string name;
    int sz;

    Box box;

    cout << "What is the name of your Box? ";
    cin >> name;
    cout << "What is the size of your Box? ";
    cin >> sz;

    box.name = name;
    box.sz = sz;

    return box;
}


int main(){
    Box box;
    box = createBox();

    createCard(box);

    cout << "Box's name is " << box.name << " and it has " << box.sz << " cards in it. Those cards are" << endl;
    printCards(box);

    return 0;
}