using System;

​

Public class Program 

{

public static void Main()

{

       stringfirstName = "Vanina";

       string secondName= "Petrova";

       string lastName= "Petrova";

       string fullName= firstName+ " "+ secondName+ " "+ lastName;

       fullName= "Vanina\nPetrova\Petrova";

       Console.WriteLine (fullName);

       Console.ReadLine();

       }

    }