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C# C# Basics (Retired) Perfect Final

Posted by PEI HUNG KUO
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PEI HUNG KUO
Python Web Development Techdegree Student 1,110 Points

I Don't know how to fix the error

the preview shows

System.ArgumentOutOfRangeException: startIndex cannot be larger than length of string. Parameter name: startIndex at System.String.Substring (Int32 startIndex, Int32 length) [0x0009c] in /builddir/build/BUILD/mono-4.4.2/external/referencesource/mscorlib/system/string.cs:1266 at System.String.Substring (Int32 startIndex) [0x00000] in /builddir/build/BUILD/mono-4.4.2/external/referencesource/mscorlib/system/string.cs:1232 at MonoTester.Run () [0x001b6] in MonoTester.cs:132 at MonoTester.Main (System.String[] args) [0x00013] in MonoTester.cs:28

what dose that mean

Program.cs 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
           int a =0;
            try
            {

               a =  Convert.ToInt32(Console.ReadLine());
                 for (int i=1; i<=a+1; i++) 
                {
                    Console.Write("Enter the number of times to print \"Yay!\": " + i);
                }

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




        }
    }
}

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

:point_right: You should go back to task 1.

I tried this in the challenge, and it passed task 1 — but it should not have, and the problems will become more serious in the latter tasks. Particular issues that need addressing for task 1:

  • You don't actually print "Yay!"
  • You don't print the prompt until after you take the input.
  • You print the prompt in a loop (instead of "Yay!").
  • The loop index should not be printed.

Start over at task 1 and be sure to fix these issues, then task 2 should go more smoothly.