Book

#include<stdio.h>
#include<iostream>
using namespace std;
class book {
    string name,author;
    float price;
    public:
    void getdata()
    {
        cout<<"Book Name: ";
        cin>>name;
        cout<<"\nAuthor: ";
        cin>>author;
        cout<<"\nPrice: ";
        cin>>price;
    }
    friend void display(book&);
};
void display(book& a)
{
        if(a.price<500||a.price>100)
        {
            cout<<"Book Name: "<<a.name;
            cout<<"\nAuthor: "<<a.author;
            cout<<"\nPrice: "<<a.price;
        }
}
int main()
{
    int n;
    cout<<"How many entries?\n";
    cin>>n;
    book data[n];
    for(int i=0;i<n;i++)
    {
        data[i].getdata();
    }
    for(int i=0;i<n;i++)
    {
        display(data[i]);
    }
    return 0;
}