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

namespace ConsoleApplication2

{ class person
       {
            public string name;
            public int age;
            public person() { name = "неизвестно"; age = 18; }
            public person(string n) { name = n; age = 18; }
            public person(string n, int a) { name = n; age = a; }
            public void GetInfo()
            {
                Console.WriteLine("Имя:{0} Возвраст: {1}",name, age);
            }
    }
    class Program
    {
        static void Main(string[] args)
        {
            person tom = new person();
            person bob = new person("bob");
            person sam = new person("sam", 25);
            tom.GetInfo();
            bob.GetInfo();
            sam.GetInfo();
            Console.ReadKey();
        }
    }
}