Не выводит список на экран

int n = sizeof(books);
for (int i = 0; i < n; i++)
{
    last = new(record);
    (*last).book.author = books[i].author;
    (*last).book.title = books[i].title;
    last->book.city = books[i].city;
    last->book.firm = books[i].firm;
    last->book.year = books[i].year;
    last->book.pages = books[i].pages;

#include <string.h>
#include <iostream>
#include <conio.h>
using namespace std;
struct card {
    char *author;
    char *title;
    char *city;
    char *firm;
    int year;
    int pages;
};
void printbook (card &car)
{ static int count = 0;
cout <<"\n"<<++count<<". "<<car.author;
cout <<' '<<car.title<<".- "<<car.city;
cout <<": "<<car.firm<<", ";
cout <<"\n"<<car.year<<".- "<<car.pages<<"c.";
}
struct record
{
    card book;
    record *prior;
    record *next;
};
card books[] = {
    {"wiener R.S. ", "Turbo","M","Mir", 1991,384},
    {"wiener R.S. ", "Turbo","M","Mir", 1991,384},
    {"wiener R.S. ", "Turbo","M","Mir", 1991,384},
    {"wiener R.S. ", "Turbo","M","Mir", 1991,384},
};
int main()
{
    record *begin = NULL;
record *last = NULL;
record *list;
int n = sizeof(books);
for (int i = 0; i < n; i++)
{
    last = new(record);
    (*last).book.author = books[i].author;
    (*last).book.title = books[i].title;
    last->book.city = books[i].city;
    last->book.firm = books[i].firm;
    last->book.year = books[i].year;
    last->book.pages = books[i].pages;
    if (begin = NULL)
    {last->prior = NULL;
    begin = last; last->next = NULL;
    }
    else
    {
        list = begin;
        while (list)
        {if(strcmp(last->book.author,list->book.author)<0)
        {
            if (begin == list)
            {
                last->prior = NULL;
                begin = last;
            }
            else
            {list->prior->next = last;
            last->prior = list->prior;
            }
            list->prior = last;
            last->next = list;
            break;
        }
        if (list->next == NULL)
        {
            last->next = NULL;
            last->prior = last;
            list->next = last;
            break;
        }
        list = list->next;
        }
        
    }
    }
    list = begin;
    cout<<'\n';
    while (list)
    {
        printbook (list->book);
        list =  list->next;
    }
    getch();
}

if (begin = NULL)
    {last->prior = NULL;
    begin = last; last->next = NULL;
    }

if ( begin == null)

int n = sizeof(books);

int n = sizeof(books)/ sizeof(card)

#include <string.h>
#include <iostream>
 
using namespace std;
 
struct card {
    char *author;
    char *title;
    char *city;
    char *firm;
    int year;
    int pages;
};
void printbook (card &car)
{ static int count = 0;
cout <<"\n"<<++count<<". "<<car.author;
cout <<' '<<car.title<<".- "<<car.city;
cout <<": "<<car.firm<<", ";
cout <<"\n"<<car.year<<".- "<<car.pages<<"c.";
}
struct record
{
    record(const card& book_):book(book_),prior(nullptr),next(nullptr){};//новая строка
 
    card book;
    record *prior;
    record *next;
};
card books[] = {
    {"wiener R.S. ", "Turbo","M","Mir", 1991,384},
    {"wiener R.S. ", "Turbo","M","Mir", 1991,384},
    {"wiener R.S. ", "Turbo","M","Mir", 1991,384},
    {"wiener R.S. ", "Turbo","M","Mir", 1991,384},
};
int main()
{
    record* begin = nullptr;    
    record* prev = nullptr;
    
    int n = sizeof(books)/sizeof(card);
 
    for (int i = 0; i!=n; ++i)
    {
        record* ptr = new record(books[i]);
        
        if (begin == nullptr)
        {
            begin = ptr;
            prev = ptr;
        }
        else
        {
            prev->next = ptr;
            ptr->prior = prev;
            prev = ptr;
        }
    }
 
    record* list = begin;
    cout<<'\n';
    while (list)
    {
        printbook (list->book);
        list =  list->next;
    }
    system("pause");
    return 0;
}