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C# C# Basics (Retired) Perfect Final

What is wrong with my code?

It won’t compile

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();
            try
            { 
                int count = int.Parse(input);
            }
           catch(FormatException);
            {
                Console.WriteLine("You must enter a whole number.");
            }
                int i = 0;
            while(i < count)

            {
                i += 1;   
                Console.WriteLine("Yay!");
            }
        }
    }
}

2 Answers

Dario Bahena
Dario Bahena
10,696 Points

There are two main issues with your code one is syntax and the other scope.

  1. there is an extra semicolon on the catch. This will just fail to compile.
try {
// something
}
catch(FormatException) {
// do something else
}
  1. Everything inside of the Main function should be inside of try except the console log of "You must enter a whole number." Basically, anything in try is its own block. That means that the code that is outside of try see what is inside try.
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
// all logic is inside of try
            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!");
            }
            }
// if something fails inside of try, this will run
            catch (FormatException) {
                Console.WriteLine("You must enter a whole number.");
            }

        }
    }
}