using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("How many people are in your class? ");

        int classSize;

        string input = Console.ReadLine();

        if (int.TryParse(input, out classSize))

        {

            string[] students = new string[classSize];

            for (int i = 0; i < classSize; i++)

            {

                Console.WriteLine("Please enter person " + (i + 1));

                students[i] = Console.ReadLine();

                Console.Clear();

            }

​

            Array.Sort(students);

            Console.WriteLine("The people in your class in alphabetical order are: ");

            foreach (string name in students)

            {

                Console.Write(name + "  ");

            }

        }

        else

            Console.WriteLine("Your input was invalid. Please enter the correct integer.");

    }

}