using System;
namespace P5_3
{
    public class Student
    {
        string name;	 		
        public Student()    				
        {
            name = "unknown";
        }
        public void SetName(string newName)   
        {
            name = newName;
        }
        public void ShowName()          	
        {
            Console.WriteLine(name);
        }
    }

    class Program
    {
        static void Main()
        {
            Student stu1;			
            stu1 = new Student();			
            stu1.SetName("");
            stu1.ShowName() ; 
              Console.ReadLine();
        } 
    }
}
