#include<iostream>

#include<string>

using namespace std;

struct book{

    int num;

    float price;

    struct book *next;

};

int main()

{

    book x, y, z, *head, *p;

    x = {,1.1f};

    y = { , 2.2f };

    z = { , 3.3f };

    head = &x;

    x.next = &y;

    y.next = &z;

    z.next = NULL;

    p = head;

    while (p!=NULL)

    {

        cout << p->num<<'\t'<<p->price << endl;

        p = p->next;

    }

    return ;

}