Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

C# C# Basics (Retired) Perfect Final

The use of input validation on the try and catch exception

Add input validation to the below program by printing "You must enter a whole number." if the user enters a decimal or something that isn’t a number.

Program.cs
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {

            Console.Write("Enter the number of times to print \"Yay!\": ");
            string input = Console.ReadLine();     

           try
           {
            int count = int.Parse(input);
           }

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

                catch (FormatException)

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

        }
    }
}

1 Answer

Steven Parker
Steven Parker
218,679 Points

Try putting the loop inside the "try" block. There should be no code between the "try" block and the "catch".