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C# C# Basics (Retired) Perfect Final

C# basics final challenge 2 of 2

Add an if/else conditional statement just after parsing the user's provided input to an integer Write a conditional expression to ensure that the remainder of the code in the try block is only executed if the user provides a non-negative number If the user enters a negative number, output to the console the message "You must enter a positive number."

Program.cs
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!");
            }
            if () {

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

2 Answers

Steven Parker
Steven Parker
216,014 Points

You've already done the harder part (task 1). Now you just need to add a conditional to check the parsed value and either perform the loop or issue a message.

Note that the instructions already tell you where to place the conditional ("just after parsing the user's provided input").

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