using System;

public class Program

{

    public static void Main()

    {

        var Petro = new Student(){

        FirstName = "Petro",

        LastName = "Vacik",

        Age = 14,   

        Rate = 75

        };

        var marichkf = new Student(){

        FirstName = "Marichka",

        LastName = "Hug",

        Age = 12,   

        Rate = 45};

        var Vasia = new Student(){

        FirstName = "Vasia",

        LastName = "LOL",

        Age = 14,   

        Rate = 80};

        Student[] arr = new Student[] { marichkf,  Petro, Vasia };

        foreach (var item in arr){

        }

    }

     public class Student

    {

        public string FirstName;

        public string LastName; 

         public int Age;

         public int Rate;

   }

}