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C# C# Basics (Retired) Perfect Final

John P
John P
8,426 Points

Code compiles and runs fine in Workspace, but not in end of course C# Basics challenge. What's wrong?

See code.

Program.cs
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
            int howMany = 0;
            while (true)
            {
              Console.Write("Enter the number of times to print \"Yay!\": ");
              try
              {
                howMany = Int32.Parse(Console.ReadLine());
                if (howMany < 0)
                {
                  Console.WriteLine("You must enter a positive number.");
                }
                else
                {
                  break;
                }
              }
              catch (FormatException)
              {
                Console.WriteLine("You must enter a whole number.");
              }
            }

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

        }
    }
}

1 Answer

Steven Parker
Steven Parker
229,582 Points

I've answered this one before, did you search the forum for similar questions (like "C# Basics, Final Challenge, Task 2 of 3")? Well, anyway, here it is again:

People often over-think this one and get too creative, and their answer is rejected for a variety of reasons (some which don't seem to make any sense).

Here are the secret "rules" you must follow for success on this one:

  • Your program must ask for and accept input ONE TIME ONLY
  • If the input validates, your program will perform exactly as in Task 1
  • If the input does not validate, it will print the error message and exit
  • Validation must be done by exception catching. There are other perfectly good methods that can be used for validation, but they will not pass this challenge

It looks like you have a loop that violates rule 1 (and therefore 2 and 3).