static void Main(string[] args)
{
User firstUser = new User();
firstUser.Age = 57;
firstUser.name = "Mario";
User secondUser = new User();
secondUser.Age = 25;
secondUser.name = "Andrea";
var list = new UserList();
list.Add(firstUser);
list.Add(secondUser);
var result = UserList.Extract("a");
foreach (var person in result)
{
File.AppendAllText("people.txt", person.name + Environment.NewLine);
}
}
