using System;
var man1 = new Man();
//man1.Name is "unknown"
//man1.Country is "unknown"
var man2 = new Man("Vladimir");
//man2.Name is "Vladimir"
//man2.Country is "unknown"
var man3 = new Man(country: "Brazil");
//man3.Name is "unknown"
//man3.Country is "Brazil"
var man4 = new Man("Vladimir", "Brazil");
//man4.Name is "Vladimir"
//man4.Country is "Brazil"
Console.WriteLine($"{man1.Name}, {man1.Country}");
Console.WriteLine($"{man2.Name}, {man2.Country}");
Console.WriteLine($"{man3.Name}, {man3.Country}");
Console.WriteLine($"{man4.Name}, {man4.Country}");
class Man {
public string Name { get; set; }
public string Country { get; set; }
public Man(string name = "unknown", string country = "unknown") {
Name = name;
Country = country;
}
}