using System;

public class Program

{

public class Student

{

public int studentId;

public string name;

public double grade;

public Student()

{

this.studentId = 0;

this.name = null;

this.grade = 0.00;

}

public Student(int studentId, string name, double grade)

{

this.studentId = studentId;

this.name = name;

this.grade = grade;

}

public Student(Student studentNew)

{

this.studentId = studentNew.studentId;

this.name = studentNew.name;

this.grade = studentNew.grade;

}

}

​

public static void Main(string[] args)

{

Student student1 = new Student();

student1.studentId = 001;

student1.name = "Ivan";

student1.grade = 6.00;

Student student2 = new Student(002, "Liliana", 5.50);

Student student3 = new Student(student1);

Console.WriteLine("The student1 have studentID:{0},,name:{1} and the grade:{2}", student1.studentId, student1.name,student1.grade);

Console.WriteLine("The student2 have studentID:{0},,name:{1} and the grade:{2}", student2.studentId, student2.name,student2.grade);

Console.WriteLine("The student3 have studentID:{0},,name:{1} and the grade:{2}", student3.studentId, student3.name,student3.grade);

}}