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C# C# Basics (Retired) Perfect Final

Posted by Winston Kaseke
Winston Kaseke
874 Points

Wrap all of the code contained in the Main method in a try/catch block The catch block should catch FormatException

Add input validation to the below program by printing "You must enter a whole number." if the user enters a decimal or something that isn’t a number.

Wrap all of the code contained in the Main method in a try/catch block
The catch block should catch FormatException exceptions
Inside of the catch block, output to the console the message "You must enter a whole number."
Program.cs 
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 count = int.Parse(input);

            int i = 0;
            while(i < count)
            try{
                i += 1;   
                Console.WriteLine("Yay!");
                } 
          catch(FormatException)
                {
            Console.Write("You must enter a whole number");
                 }
        }
    }
}

1 Answer

Aaron Sawyer
Aaron Sawyer
15,822 Points
Aaron Sawyer
Aaron Sawyer
15,822 Points

All of the original code in main needs to be wrapped int a try block.

using System;

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

                int count = int.Parse(input);

                int i = 0;
                while(i < count)
                {
                    i += 1;   
                    Console.WriteLine("Yay!");
                }
            }
             catch(FormatException)
                {
                    Console.WriteLine("You must enter a whole number.");
                }
        }
    }
}