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C# C# Basics (Retired) Perfect Final

Francisco Micó Juan
Francisco Micó Juan
1,156 Points
Posted by Francisco Micó Juan
Francisco Micó Juan
1,156 Points

The CodeChallenge throws me that mistake: System.ArgumentOutOfRangeException: startIndex cannot be larger than length.

Hello the CodeChallenge throws me that message:

System.ArgumentOutOfRangeException: startIndex cannot be larger than length of string. Parameter name: startIndex. See output for stack trace.

I try this code in the console and works it well. I don't know how is the problem.

Program.cs 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
            string read = Console.ReadLine();
            try 
            {
              int time = int.Parse(read);
              int count = 0;
              while(count <= time){
                Console.WriteLine("Enter the number of times to print \"Yay!\": ");
                count += 1;
              }
            }
            catch(FormatException)
            {
              Console.Write("You must enter a whole number.");
            }
            catch(ArgumentOutOfRangeException)
            {
              Console.Write("You must enter a whole number.");
            }

        }
    }
}

1 Answer

tobiaskrause
tobiaskrause
9,160 Points

This might help you (I will comment it soon just wait). In t the next task you just have to check if time smaller than 0

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
             int count = 0;
             int time = 0;
// obviously we have to ask BEFORE the user writes any information
             Console.WriteLine("Enter the number of times to print \"Yay!\": ");
// we get the information
             string read = Console.ReadLine();
            try 
            {
// we parse it....-1 so we get the corret amout of times....if time = 1 you dont need the -1
               time = Int32.Parse(read) - 1;
            }
            catch(FormatException)
            {
              Console.Write("You must enter a whole number.");
            }
  // after all the validations and the exceptions we can run our loop for the output
              while(count <= time){
                Console.WriteLine("Yay!");
                count += 1;
              }

        }
    }
}

EDIT: of course you can also do in the the try catch...the solution above is jsut my personal preference

            try 
            {
// we parse it....in this case count = 1
               time = Int32.Parse(read) ;
                 while(count <= time){
                Console.WriteLine("Yay!");
                count += 1;
              }
//other stuff
Francisco Micó Juan
Francisco Micó Juan
1,156 Points
Francisco Micó Juan
Francisco Micó Juan
1,156 Points

Hi!!

The line: " Console.WriteLine("Enter the number of times to print \"Yay!\": "); " Solve my problem, otherwise If -1 to property time. I have a new problem: I need 5 prints and I get only 4. For that reason I don't use that line.

Now with the same code as before. I have this new problem: "I entered 2.5. I expected "You must enter a whole number.", but got "ust enter a whole number." instead.

I think the console don't understand the line "You must enter a whole number" but I don't know why.

Thanks for your helping.