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C# C# Basics (Retired) Perfect Final

marcihoward3
marcihoward3
5,226 Points
Posted by marcihoward3
marcihoward3
5,226 Points

I'm stuck. I don't have a question. I'm "tapping out". What am I doing wrong?

What am I doing wrong here? 30 minutes on the question means I clearly don't understand something essential to finding the answer.

Program.cs 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
          var printNum = 0;

         Console.Write("Enter the number of times to print \"Yay!\": ");
          var entry = Int32.Parse(Console.ReadLine());
          try
          {
            var input = Int32.Parse(entry);
          }
          catch (FormatException)
          { 
            Console.WriteLine("You must enter a whole number.");
            continue;
          }

          for (int i = 0; i < entry; i++){
            Console.WriteLine("Yay!");
          }

        }
    }
}

2 Answers

srikarvedantam
srikarvedantam
8,369 Points
srikarvedantam
srikarvedantam
8,369 Points

I am noticing a couple of issues with the posted code:

var input = Int32.Parse(entry);

The "entry" argument is already of type "Int32" (see it's earlier declaration / definition that uses String parsing, which is read from Console, to Int32), but it is not of type "String". And, "Int32.Parse(...)" doesn't support parsing an Int32 value to Int32 value again (as there is no need)!

continue;

The above statement should be used in the context of a "loop". And, there is no enclosing loop here. So, this usage is incorrect.

srikarvedantam
srikarvedantam
8,369 Points
srikarvedantam
srikarvedantam
8,369 Points

How about the following solution?:

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
            Console.Write("Enter the number of times to print \"Yay!\": ");
            String userInput = Console.ReadLine();
            int numTimes = 0;
            try {
                numTimes = int.Parse(userInput);
            }
            catch(FormatException) {
                 Console.WriteLine("You must enter a whole number.");
            }
            for(int i = 0; i < numTimes; ++i) {
              Console.WriteLine("Yay!");
            }
        }
    }
}
marcihoward3
marcihoward3
5,226 Points
marcihoward3
marcihoward3
5,226 Points

I appreciate your help, very much. I was stuck and could not make sense of what I was missing. Seeing it, helps me to understand where I made the error (and highlighted a concept that I hadn't understood (and, of course, didn't realize I didn't...).

Thanks again!