{}
using System;
using System.Collections.Generic;
using System.Linq;
class User
{
public string Name { get; set; }
public int Age { get; set; }
public bool Active { get; set; }
}
class Program
{
static void Main()
{
var users = new List<User>
{
new User { Name = "Alice", Age = 30, Active = true },
new User { Name = "Bob", Age = 25, Active = false },
new User { Name = "Charlie", Age = 35, Active = true },
new User { Name = "Diana", Age = 28, Active = true },
new User { Name = "Eve", Age = 22, Active = false },
};
var active = users
.Where(u => u.Active)
.OrderBy(u => u.Name)
.ToList();
Console.WriteLine(string.Join(", ", active.Select(u => u.Name)));
Console.WriteLine($"Průměrný věk: {active.Average(u => u.Age):0.0}");
}
}