using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            do
            {
                int choice;
                Console.Clear();
                Console.WriteLine("1. Add a student");
                Console.WriteLine("2. List student");
                Console.WriteLine("3. Classify student");
                Console.WriteLine("4. Exit");
                Console.WriteLine("please choose an option");
                choice = int.Parse(Console.ReadLine());
                switch (choice)
                {
                    case 1:
                        break;
                    case 2:
                        break;
                    case 3:
                        break;
                    case 4:
                        break;
                    default:
                        Console.WriteLine("Lỗi");
                        break;
                }
            } while (true);


        }
    }
    public class Student
    {
        static int Count = 0;
        public static int ID
        {
            set;
            get;
        }
        string Name
        {
            set;
            get;
        }
        string Class
        {
            set;
            get;
        }

        float Math
        {
            set;
            get;
        }
        float Physic
        {
            set;
            get;
        }
        float Chemistry
        {
            set;
            get;
        }
        void Display()
        {
            Console.WriteLine("ID :" +ID);
            Console.WriteLine("Name :" +Name);
            Console.WriteLine("Class :" +Class);
            Console.WriteLine("Math :" +Math);
            Console.WriteLine("Physic :" +Physic);
            Console.WriteLine("Chemisty :" +Chemisty);
            Console.WriteLine("");
        }

    }
}