d3adin. Posts - Answer Overflow

d3adin.

•Created by d3adin. on 12/29/2023 in #help

✅ Console Readline accepting empty value.

Hi all, I'm trying to set console readline to not accept empty value (""). However, I've tried a bunch of different options and I still get "System.FormatException: 'The input string '' was not in a correct format.' " Here is my code

do
{
    Console.WriteLine("Player 1, how far away from the city do you want to station the Manticore? ");
    manticoreDistance = Convert.ToInt32(readResult);
} while (manticoreDistance < 0 || manticoreDistance > 100);
Console.Clear();

do
{
    Console.WriteLine("Player 1, how far away from the city do you want to station the Manticore? ");
    manticoreDistance = Convert.ToInt32(readResult);
} while (manticoreDistance < 0 || manticoreDistance > 100);
Console.Clear();

Ideally the goal was to make a loop that displays a message stating that a number needs to be entered.

10 replies

CC#

•Created by d3adin. on 11/5/2023 in #help

❔ Console.ReadLine != null

Hi all, I'm went trough this Microsoft challenge (unsuccessfully) and after reviewing this solution I'm trying to understand what the purpose is of:

 if (readResult != null) 
    {
        valueEntered = readResult;
    }

 if (readResult != null) 
    {
        valueEntered = readResult;
    }

Upon testing I can see that the code works exactly the same that being commented out. Here is the full program.

string? readResult;
string valueEntered = "";
int numValue = 0;
bool validNumber = false;

Console.WriteLine("Enter an integer value between 5 and 10");

do
{
    readResult = Console.ReadLine();
    if (readResult != null) 
    {
        valueEntered = readResult;
    }

    validNumber = int.TryParse(valueEntered, out numValue);

    if (validNumber == true)
    {
        if (numValue <= 5 || numValue >= 10)
        {
            validNumber = false;
            Console.WriteLine($"You entered {numValue}. Please enter a number between 5 and 10.");
        }
    }
    else 
    {
        Console.WriteLine("Sorry, you entered an invalid number, please try again");
    }
} while (validNumber == false);

Console.WriteLine($"Your input value ({numValue}) has been accepted.");

readResult = Console.ReadLine();

string? readResult;
string valueEntered = "";
int numValue = 0;
bool validNumber = false;

Console.WriteLine("Enter an integer value between 5 and 10");

do
{
    readResult = Console.ReadLine();
    if (readResult != null) 
    {
        valueEntered = readResult;
    }

    validNumber = int.TryParse(valueEntered, out numValue);

    if (validNumber == true)
    {
        if (numValue <= 5 || numValue >= 10)
        {
            validNumber = false;
            Console.WriteLine($"You entered {numValue}. Please enter a number between 5 and 10.");
        }
    }
    else 
    {
        Console.WriteLine("Sorry, you entered an invalid number, please try again");
    }
} while (validNumber == false);

Console.WriteLine($"Your input value ({numValue}) has been accepted.");

readResult = Console.ReadLine();

13 replies

CC#

•Created by d3adin. on 11/2/2023 in #help

❔ Microsoft learn challenges

Is it normal to really struggle with the MS C# challenges? I've spent more than 7-8 hours all together to figure challenges in this section https://learn.microsoft.com/en-us/training/modules/csharp-do-while/ and I still managed to fail. Even with the research.

11 replies

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