Bài 2 C#

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

namespace Test
{
    class Dog
    {
        private string _name;
        private int _MP = 100;

        public string Name { get; set; }
        public int MP = 100;

        /*public Dog(string name)
        {
            Name = name;
        }*/

        public void InputName()
        {
            Name = Console.ReadLine();
        }
        public void ShowMP()
        {
            Console.WriteLine("MP = " + MP);
        }
        public void Bark()
        {
            if (Name.Length != 0)
            {
                Console.WriteLine(Name + " bark");
                MP -= 20;
            }
            else Console.WriteLine("Sorry");
        }

    }
    class RunMain
    {
        static void Main(string[] args)
        {
            Dog a = new Dog();
            a.InputName();
            a.Bark();
            a.ShowMP();
            a.Bark();
            a.ShowMP();
            a.Bark();
            a.ShowMP();
            Console.ReadKey();
        }
    }
}