using System;

//using SystemException;

public class Program

{

    public static void Main()

    {

        Student s1 = new Student();

        s1.SetId(2);

        s1.SetName("April");

        Console.WriteLine("Sudent Id= {0} and Name= {1}", s1.GetId(), s1.GetName());

    }

}

public class Student

{

    private int id;

    private string name;

    private int passMark = 35;

    //seting id function

    public void SetId(int id)

    {

    if (id < 0)

        {

            throw new Exception("student id cannot be negative");

        }

    else

        {

        this.id = id;

        }

    }

    //getting id function

    public int GetId()

    {

    return id;

    }

    //setting name function

    public void SetName(string name)

    {

    if(string.IsNullOrEmpty(name))

    {

    throw new Exception("name cannot be empty");

    }

    else

    {

    this.name = name;

    }

    }

     //getting name

    public string GetName()

    {

    if (string.IsNullOrEmpty(name))

        {

            return "no name";

        }

        else

        {

        return name;

        }

        }   

}

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