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

typedef struct bookNode {
    string id;
    string name;
    double price;
    bookNode *next;
} book_node, *bookList;

bool is_list_empty(bookList *l) {
    if ((*l)->next == NULL) {
        return true;
    }
    return false;
}

void display(bookList *l) {
    if (is_list_empty(l)) {
        printf("List is empty\n");
    } else {
        bookNode *temp = (*l)->next;
        while (temp != NULL) {
            cout << temp->id << " " << temp->name << " " << fixed << setprecision(2) << temp->price << endl;
            temp = temp->next;
        }
    }
}