structure, substructure

#include <iostream>
#include <stdio.h>
#include <cstring>
using namespace std;

struct Book
{
    char title[30],author[30];
    float price;
    int year_of_publication;
};

struct Author
{
    char name[30],subname[30];
    int birth_date;
    struct Book x[15];
};

struct Library
{
    struct Author y[15];
};

void readBooks(struct Library tab[], int n)
{
    int i,j;
    for(i=0;i<n;i++)
    {cout<<"Input "<<i+1<<". authors name"<<endl;
    gets(tab[i].Author[y].name);
    gets(tab[i].Author[y].subname);

    }
}
int main()
{

    return 0;
}