using System;

public class Program

{

    public class Student 

    {

        //member variable

        string name, subject;

        int age;

        double grade;

      //methods 

        public void displaystudentinfo()

    {

        Console.WriteLine("Name"+ name);

        Console.WriteLine("Age"+ age); 

        Console.WriteLine("Subject"+ subject);

        Console.WriteLine("Grade"+ grade);

    }

      //defulat contrutor 

        public person()

    {

        name = "";

        age = 0;

    }

        //parameterised constructor

        public person(string na, int ag)

    {

            name = na;

            age = ag;

    }

}//endclass 

    public static void Main()

    {

        //parameterised object

        person person1 = new person("Snow",21);

        person1.printperson();

        Console.ReadLine();

    }

}