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C# C# Basics (Retired) Perfect Final

Posted by Babatunde Obidare
Babatunde Obidare
Courses Plus Student 10,514 Points

How do I get this block of codes to print different messages depending on which condition is met?

using System;

namespace Treehouse.CodeChallenges { 

class Program
{
    static void Main()
    {
    try
    {
     Console.WriteLine("Enter the number of times to print \"Yay!\":");
        int numTimes = Convert.ToInt32(Console.ReadLine());
         for (int i = 1; i <= numTimes; i++)
          {
            if (numTimes.GetType() != typeof(int) || numTimes < 0)
             {

                continue;
             }

            else
            {
            Console.WriteLine("Yay!");
            }
         }
      }
      catch (FormatException)
     {
        Console.WriteLine("You must enter a whole number.");
      }

    }
}

}

Program.cs 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
        try
        {
            Console.Write("Enter the number of times to print \"Yay!\": ");
            int numTimes = Convert.ToInt32(Console.ReadLine());
             for (int i = 1; i <= numTimes; i++)
              {
                if (numTimes.GetType() != typeof(int))
                 {
                    continue;
                 }
                 else if (numTimes < 0)
                 {
                  Console.WriteLine("You must enter a positive number.");
                 }
                else
                {
                Console.WriteLine("Yay!");
                }
             }
          }
          catch (FormatException)
         {
            Console.WriteLine("You must enter a whole number.");
          }


        }
    }
}
tobiaskrause
tobiaskrause
9,160 Points

This part of your code makes no sense: You already tried to convert the Input to an int. There is no need to check if numTimes is a integer since, the program have an error if it is not possible to convert the input into an int. For example: When the user types "One" then Convert.ToInt32(Console.ReadLine()) will already lead to an Exception cause it is not possible to convert a String "One" to an integer

 int numTimes = Convert.ToInt32(Console.ReadLine());
             for (int i = 1; i <= numTimes; i++)
              {
                if (numTimes.GetType() != typeof(int))

My solution to this challange was different I will post it soon

tobiaskrause
tobiaskrause
9,160 Points

No problem :) Learning by doing/trying is still the best way to get coding experience. You can't make progress without mistakes... You even have to make mistakes to learn how to prevent them.

But C# is fun and later you can create Websites with ASP.NET (C#), mobile Apps and so much other stuff

Edit: And if you watch the roadmap of treehouse: https://teamtreehouse.com/roadmap you will see there are some nice upcoming courses for C# and ASP.NET (FINALLY)

2 Answers

tobiaskrause
tobiaskrause
9,160 Points

And that would be the solution with a for loop. Int32.Parse is better in this case instead of Convert.ToInt32 since Int32.Parse specialy deals with strings while Convert.ToInt32() with any object TryParse() is maybe even better. Nice explenation: http://stackoverflow.com/questions/199470/whats-the-main-difference-between-int-parse-and-convert-toint32 Edit: Sry had bad formating

Edit: Just updated the code for the last Task

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
             Console.WriteLine("Enter the number of times to print \"Yay!\": ");
             string read  = Console.ReadLine();
            try 
            {
          int numTimes = Int32.Parse(read);
         if (numTimes < 0)
              {   
           Console.WriteLine("You must enter a positive number.");
              }
           else
                 {

                for(int i = 1; i <= numTimes; i++) {
                    Console.WriteLine("Yay!");
                 }  
            }
        }
            catch(FormatException)
           {
                Console.Write("You must enter a whole number.");
           }  
        }
    }
}
Babatunde Obidare
Babatunde Obidare
Courses Plus Student 10,514 Points

Thanks Tobias! The solution is perfect.

I guess as a beginner I'm going to write some codes that does not make sense initially but will learn.

Babatunde Obidare
PLUS
Babatunde Obidare
Courses Plus Student 10,514 Points
Babatunde Obidare
Babatunde Obidare
Courses Plus Student 10,514 Points

Thanks! I'm looking forward to the C# Objects course and other C#/ASP.Net courses.