#include<iostream>
#include "student.cpp"
using namespace std;

int main() {
   Student s1;
   s1.display();

   Student s2;
   s2.display();

   Student *s3 = new Student;
   s3->display();

   cout<<"Parameterised constructor demo"<<endl;
   Student s4(10);
   s4.display();

   Student *s5 = new Student(20);
   s5->display();

   return 0;
}