using System;

public class Program

{

    // Define the StudentData record

    public class StudentData

    {

      public string firstName;

      public string lastName;

      public int age;

    }

    // A module that uses a loop to print strings stored in an array

    public void printNames() {

        // index              0         1       2       3        4

        string[] names = { "Alyssia", "Eve", "Trent", "Sam", "Gilbert"};

        // Print out the third element "Trent"

        Console.WriteLine(names[2]);

        // Loop through all of the elements in the array and print them one at a time

        for(int i=0; i < names.Length; i++){

            Console.WriteLine(names[i]);

        }   

    }

    public static void Main()

    {

        // Create an array with 3 empty elements for StudentData records.

        StudentData[] students = new StudentData[3];

        // Loop as many times as there are elements in the array

        for(var i=0; i < students.Length; i++){

            // Create a new StudentData record and give a value to each of its properties.

            StudentData student = new StudentData();

            student.firstName = Console.ReadLine();

            student.lastName = Console.ReadLine();

            student.age = Convert.ToInt32(Console.ReadLine());

            // Add the new record to the students array

            students[i] = student;  

        }

        // Loop through the array containing StudentData records and print out data about each student.

        for(var i=0; i < students.Length; i++){

                Console.WriteLine(students[i].firstName + " " + students[i].lastName + " is " + Convert.ToString(students[i].age) + " years old.");

        }

    }

}