using System;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("How many grades would you like to enter?");

        float num = float.Parse(Console.ReadLine());

        string[] grades = new string [num];

        for (float i = 0; i < num; i++)

        {

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

            grades[i] = Console.ReadLine();

        }

    }

}