#include <iostream>
using namespace std; 
class student 
{
    public :
    int rollno; 
    char name[50];
    void studdet ()
    {
        cout <<"Enter your name :"<<endl; 
        cin >>name; 
        cout <<"Enter your roll no : "<<endl; 
        cin >>rollno; 
    }
};
class books:public student
{
    public :
    char book[100],author[100];
    int n,i,d1,d2,d3,m1,m2,m3,y1,y2,y3;
    void getdata ()
    {
    cout <<"Enter the no. of books you taken: ";
    cin>>n; 
    cout <<n<<endl; 
    cout <<"Enter the date you taken the books : ";
    cin>>d1>>m1>>y1;
    cout <<"Enter the last date : "<<endl; 
    cin >>d2>>m2>>y2;
    cout <<"Enter the submission date :"<<endl; 
    cin>>d3>>m3>>y3;
    }
};
class library :public books 
{
    public :
    void display ()
    {
        cout <<"****************************"<<endl; 
        cout <<"Name : "<<name <<endl; 
        cout <<"Roll no: "<<rollno<<endl; 
        cout <<"No. of books taken: "<<n<<endl; 
      cout<<"Enter the book and author name :"<<endl; 
    for (i=0;i<n;i++)
    {
        cin >>book>>author;
        cout <<book<<"-"<<author<<endl; 
   }
        cout <<"Issued Date : "<<d1<<"."<<m1<<"."<<y1<<endl; 
        cout <<"last date: "<<d2<<"."<<m2<<"."<<y2<<endl; 
        cout <<"submission date : "<<d3<<"."<<m3<<"."<<y3<<endl; 
        
    }
    void check ()
    {
        if (d3>d2||m3>m2)
        {
            cout <<"\t pay fine "<<endl; 
        }
        else 
        cout <<"\t No fine "<<endl; 
    }
};
int main() {
    cout <<"\t \t Library management "<<endl; 
    library l; 
    l. studdet();
    l. getdata();
    l. display ();
    l. check();
    return 0;
}