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C#

Hammad Ali
PLUS
Hammad Ali
Courses Plus Student 2,610 Points
Posted by Hammad Ali
Hammad Ali
Courses Plus Student 2,610 Points

I'm stuck in c# code!

Question is Add more input validation to your program by printing “You must enter a positive number.” if the user enters a negative number.

This is the code I typed but it is not accepting. Whenever I enter check code it displays "I entered -1. I expected "You must enter a positive number.", but got "You must enter a whole number. You must enter a positive number." instead.". Help me with this where I'm doing mistake.

using System;

namespace Treehouse.CodeChallenges { class Program { static void Main() {
while(true) { try { Console.Write("Enter the number of times to print \"Yay!\": "); Console.Write("You must enter a whole number. \n"); int num = Convert.ToInt32(Console.ReadLine());

                if(num < 0)
                {
                    Console.Write("You must enter a positive number.");
                    num = Convert.ToInt32(Console.ReadLine());
                }
                int i=0;
                for ( i=0; i < num; i++)
                {
                    Console.Write("Yay!");
                }
                break;
            }
            catch(FormatException fe)
            {
                Console.Write("Invalid entry");
            }

    }

    }
}

}

6 Answers

tobiaskrause
tobiaskrause
9,160 Points
tobiaskrause
tobiaskrause
9,160 Points 
using System;

namespace Treehouse.CodeChallenges{
class Program 
{ 
public static void Main() {

while(true) {

    try {
    Console.Write("Enter the number of times to print \"Yay!\": ");

    int num = Convert.ToInt32(Console.ReadLine());

            if(num < 0)
            {
                     Console.Write("You must enter a positive number.");
                     break;
           }


                for (int i=0; i < num; i++)
                {
                    Console.Write("Yay!");
                }
                break;
               }
               catch(FormatException fe)
              {
                Console.Write("You must enter a whole number. \n");
              }
            }
       }
    }
}

Test if this works pls since you dont linked your challange :)

william williams
william williams
2,912 Points
william williams
william williams
2,912 Points 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {

            Console.Write("Enter the number of times to print \"Yay!\": ");
            var entry = Console.ReadLine();
            int counter  = 0;

            try
            {
            var total = int.Parse(entry);

            if(total < 0)
            {
                Console.WriteLine("You must enter a positive number");
            }
                else
                {
                    while (total > counter)
                    {
                      Console.WriteLine("Yay!");
                      counter +=1;
                    }
                }
            }

            catch(FormatException)
            {
            Console.WriteLine("You must enter a whole number");
            }
            Console.ReadLine();
        }
    }
}
Brendon Van der nest
Brendon Van der nest
12,826 Points
Brendon Van der nest
Brendon Van der nest
12,826 Points

Well I tried....Okay?!

using System;

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

using System;

namespace Treehouse.CodeChallenges { class Program { static void Main() { Console.Write("Enter the number of times to print \"Yay!\": ");

        string entry = Console.ReadLine();
        try
        {

            int total = Convert.ToInt32(entry);

            if (total < 0)
            {
                Console.Write("You must enter a positive number.");


            }

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


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

    }
}

}

Lomaloma Pepine
Lomaloma Pepine
4,927 Points
Lomaloma Pepine
Lomaloma Pepine
4,927 Points

Hope this helps,

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {               
            while(true)
            {   
                try
                {                    
                    Console.Write("Enter the number of times to print \"Yay!\": ");
                    int input = Convert.ToInt32(Console.ReadLine()); 

                    if (input < 0)
                    {                         
                        Console.WriteLine("You must enter a positive number."); 
                        break;
                    }
                    else    
                    {
                        for(int i = 0; i < input; i++)
                        {
                            Console.Write("Yay!");
                        }
                        break;
                    }
               }     
                catch(FormatException)
                {
                    Console.WriteLine("You must enter a whole number.");
                    continue;
                }

            }

        }
    }
}
HIDAYATULLAH ARGHANDABI
HIDAYATULLAH ARGHANDABI
21,058 Points
HIDAYATULLAH ARGHANDABI
HIDAYATULLAH ARGHANDABI
21,058 Points 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {               
            while(true)
            {   
                try
                {                    
                    Console.Write("Enter the number of times to print \"Yay!\": ");
                    int input = Convert.ToInt32(Console.ReadLine()); 

                    if (input < 0)
                    {                         
                        Console.WriteLine("You must enter a positive number."); 
                        break;
                    }
                    else    
                    {
                        for(int i = 0; i < input; i++)
                        {
                            Console.Write("Yay!");
                        }
                        break;
                    }
               }     
                catch(FormatException)
                {
                    Console.WriteLine("You must enter a whole number.");
                    continue;
                }

            }

        }
    }
}