7laboop

static void Main(string[] args)
        {
            Person User1 = new Person("Ilsaf", "Musin", new DateTime(2003, 05, 27));
            Person User2 = new Person();
            User2.Year = 1999;
            Console.WriteLine("User1: {0}, {1}, {2}",User1.Name, User1.Surname, User1.DayOfBDay);
            Console.WriteLine(User2.ToString());
            Console.WriteLine(User2.ToShortString());
        }


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

namespace lab66oop
{
    public class Person
    {
        private string name;
        private string surname;
        private DateTime dayofBDay;
        public Person(string name, string surname, DateTime dayofBDay)
        {
            this.name = name;
            this.surname = surname;
            this.dayofBDay = dayofBDay;
        }
        public Person()
        {
            this.name = "NoName";
            this.surname = "NoNamemov";
            this.dayofBDay = new DateTime();
        }
        public string Name
        {
            get { return this.name; }
            set { this.name = value; }
        }
        public string Surname
        {
            get { return this.surname; }
            set { this.surname = value; }
        }
        public DateTime DayOfBDay
        {
            get { return this.dayofBDay; }
            set { this.dayofBDay = value; }
        }
        public int Year
        {
            get { return this.dayofBDay.Year; }
            set => this.dayofBDay = new DateTime(value, this.dayofBDay.Month, this.dayofBDay.Day);
        }
        public override string ToString()
        {
            return $"{this.name} {this.surname} {this.dayofBDay}";
        }
        public virtual string ToShortString()
        {
            return $"{this.name} {this.surname}";
        }
    }
}