code not working in workspaces but works in visual studio

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
            try
                {
                    Console.Write("Enter the number of times to print \"Yay!\": ");
                    string input = Console.ReadLine();
                    int count = int.Parse(input);

                    if(count < 0)
                    {
                        Console.WriteLine("You must enter a positive number.")
                        continue;
                    }

                    int i = 0;
                    while (i < count)
                    {
                        i += 1;
                        Console.WriteLine("Yay!");
                    }

                }
                catch (FormatException)
                {
                    Console.WriteLine("You must enter a whole number.");
                }


        }
    }
}