C#•4mo ago

✅ need some help making a program

buuuuuuuuuuut im getting errors idk how to fix

105 Replies

rigamortusOP•4mo ago

changed it slightly

Buddy•4mo ago

How do you set the value of a variable? and how do you check if a value is equals to another value?

rigamortusOP•4mo ago

you just.. use =? ==..? im trying to get it to return false if the email doesnt have a @ and a .

Buddy•4mo ago

Correct and check your code

rigamortusOP•4mo ago

Buddy•4mo ago

Read it out for yourself

Buddy•4mo ago

also I suggest you check Microsoft documentation https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/statements/selection-statements#the-if-statement

if and switch statements - select a code path to execute - C# refer...

The if and switch statements provide branching logic in C#. You use if, else and switch` to choose the path your program follows.

rigamortusOP•4mo ago

but apparently..

Buddy•4mo ago

compare your if statement to what you wrote earlier Setting the value versus comparing a value

rigamortusOP•4mo ago

all i did was add a space to else if and change the = to ==

Buddy•4mo ago

And one more thing. Compare the example given in the microsoft documentation Last thing You have a character in your code that does not exist in the example

rigamortusOP•4mo ago

im ngl i dont understand the documentation at all i leant c# in 3 hours for school the basic basics ofc

Buddy•4mo ago

    if (char.IsUpper(ch))
    {
        Console.WriteLine($"An uppercase letter: {ch}");
    }
    else if (char.IsLower(ch))
    {
        Console.WriteLine($"A lowercase letter: {ch}");
    }
    else if (char.IsDigit(ch))
    {
        Console.WriteLine($"A digit: {ch}");
    }
    else
    {
        Console.WriteLine($"Not alphanumeric character: {ch}");
    }

    if (char.IsUpper(ch))
    {
        Console.WriteLine($"An uppercase letter: {ch}");
    }
    else if (char.IsLower(ch))
    {
        Console.WriteLine($"A lowercase letter: {ch}");
    }
    else if (char.IsDigit(ch))
    {
        Console.WriteLine($"A digit: {ch}");
    }
    else
    {
        Console.WriteLine($"Not alphanumeric character: {ch}");
    }

Do you see any semicolons in the if-statement?

rigamortusOP•4mo ago

nope huh

Buddy•4mo ago

Now, do you see any in yours?

rigamortusOP•4mo ago

well yeah but if i get rid of it

rigamortusOP•4mo ago

it tells me to add it back

Buddy•4mo ago

Please show the code

rigamortusOP•4mo ago

Buddy•4mo ago

variables cannot have a space in them

rigamortusOP•4mo ago

oh oops

rigamortusOP•4mo ago

yeah.. idk if i can cope with this

Buddy•4mo ago

What exactly do you want to make?

rigamortusOP•4mo ago

i want to input text and check to see if it has at least 1 @ and 1 . if it doesnt have both then it tells you your email is invalid

Buddy•4mo ago

Name your class Program change main to Main with a capital M, and remove all the parameters and put string[] args instead. Unless you have the ability to use top-level statements that's what you have to do.

rigamortusOP•4mo ago

mkay

Buddy•4mo ago

But I have no idea what the site requires.

rigamortusOP•4mo ago

idk either i just cant use vscode so im stuck with this random compiler since vscode refuses to run

Buddy•4mo ago

Did you follow this $vscode ?

MODiX•4mo ago

Follow the instructions here on getting started with DevKit for C# in VSCode: https://code.visualstudio.com/docs/csharp/get-started

Get started with C# and .NET in Visual Studio Code

Getting Started with C# and .NET Development in Visual Studio Code

rigamortusOP•4mo ago

yup doesnt work

Buddy•4mo ago

It might be easier to use Visual Studio Community 2022 VSCode is not for beginners And is not the same program as Visual Studio Community VS is an IDE whereas VSCode is not. meaning VS will install everything you need.

rigamortusOP•4mo ago

i tried using vs 2022 also didnt work i can retry though

Buddy•4mo ago

define didn't work

rigamortusOP•4mo ago

like i tried running some program and it gave me errors not related to the program at all that i didnt understand i asked for help

Buddy•4mo ago

any examples?

rigamortusOP•4mo ago

one second

rigamortusOP•4mo ago

just didnt wanna work in vs 2022 but it worked on this random compiler ill reinstall vs 2022 but idk if i can get it to work

Buddy•4mo ago

$newproject

MODiX•4mo ago

When creating a new project, prefer using .NET over .NET Framework, unless you have a very specific reason to be using .NET Framework. .NET Framework is now legacy code and only get security fix updates, it no longer gets new features and is not recommended. https://cdn.discordapp.com/attachments/569261465463160900/899381236617855016/unknown.png

Buddy•4mo ago

Make sure you use .NET (and not .NET Framework) Not that it has anything to do with the error. and worst case scenario you might just need to reinstall .NET

rigamortusOP•4mo ago

ive installed it 3 times literally 64 bit and 82(or 84 idk) bit

Buddy•4mo ago

I can't see any errors with that code. Did you copy paste it?

rigamortusOP•4mo ago

yeah copy pasted 1 to 1

Buddy•4mo ago

Then that might be it You could've accidentally pasted an invisible character And site maybe filters those out.

rigamortusOP•4mo ago

ok im signing into vs2022

rigamortusOP•4mo ago

i assume its this

Buddy•4mo ago

Make sure you do not open a folder as C# is project based and not file based

rigamortusOP•4mo ago

Buddy•4mo ago

so please go through the project wizard by pressing new project

rigamortusOP•4mo ago

Buddy•4mo ago

You must install the .net desktop development workload you can find it by running Visual Studio Installer and pressing modify There should be an app installed when you install Visual Studio, so you can just search for it

Buddy•4mo ago

This should be checked

rigamortusOP•4mo ago

alright

Buddy•4mo ago

for you it's called .NET desktop development I don't have visual studio installed so it's called so for me because I only have the build tools (without the IDE).

rigamortusOP•4mo ago

im downloading it at m

Buddy•4mo ago

Sweet!

Buddy•4mo ago

After it's installed you should see a bunch of templates to your right. Here:

Buddy•4mo ago

Then you create a Console Application project and you'll have a template ready to go

rigamortusOP•4mo ago

this framework?

Buddy•4mo ago

That runtime, correct. Remember what I said before about top-level statements?

rigamortusOP•4mo ago

yeah using string [] args

Buddy•4mo ago

This time you don't have to do so.

Buddy•4mo ago

https://sharplab.io/#v2:EYLgxg9gTgpgtADwGwBYA0ATEBqAPgAQCYBGAWACh9iBOACgCIAJGAGxYgAIB1aFjAQnoBKANxA=

SharpLab

C#/VB/F# compiler playground.

Buddy•4mo ago

Left side is your code; right side is what the compiler spits out (meaning not something you have to write). So you can forget about the entry-point

rigamortusOP•4mo ago

oooh

Buddy•4mo ago

That's what top-level statements does. Note that it is only for one file (the entry-point)

rigamortusOP•4mo ago

ok i wanna ask something though see how i kinda need to check if @ is entered right is IndexOf the right way to do that?

rigamortusOP•4mo ago

cause these r the errors im getting

Buddy•4mo ago

It's definitely a fast way of doing so, yes. You can however optimize it by instead declaring @ as a char meaning a single character you can do so like this

char at = '@';

char at = '@';

those single quotations means a character

rigamortusOP•4mo ago

ah mk ok so if i make Isearch a bool itll return false if @ isnt entered right?

rigamortusOP•4mo ago

here

Buddy•4mo ago

Oh, yeah. IndexOf returns the index of where the character was found I suggest reading the documentation of IndexOf https://learn.microsoft.com/en-us/dotnet/api/system.string.indexof?view=net-8.0 Specifically this

Reports the zero-based index of the first occurrence of a specified Unicode character or string within this instance. The method returns -1 if the character or string is not found in this instance.

The latter part

rigamortusOP•4mo ago

so itll return -1 if its not found alright

Buddy•4mo ago

Correct

rigamortusOP•4mo ago

ill just check to see if -1 is returned then

Buddy•4mo ago

Correct

rigamortusOP•4mo ago

i can do that by.... doing if Isearch == -1 right?

Buddy•4mo ago

First you must change your ISearch's to an integer but yes, and that means it has not been found in the text

rigamortusOP•4mo ago

done

rigamortusOP•4mo ago

getting a lot of red lines thats perfectly fine thats what I want

Buddy•4mo ago

You cannot declare variables multiple times check your code again

rigamortusOP•4mo ago

oops i thought you could ok apparently i cant use or thats different from python

rigamortusOP•4mo ago

Buddy•4mo ago

https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/operators/boolean-logical-operators#conditional-logical-and-operator- https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/operators/boolean-logical-operators#conditional-logical-or-operator-

rigamortusOP•4mo ago

so && is or thats what im getting

Buddy•4mo ago

Read again

rigamortusOP•4mo ago

or is it ||??

Buddy•4mo ago

Yes, || is OR

rigamortusOP•4mo ago

oh ok thats kinda cryptic

Buddy•4mo ago

Remember what I mentioned earlier, the semicolon

rigamortusOP•4mo ago

...

rigamortusOP•4mo ago

OH right

rigamortusOP•4mo ago

now..

Buddy•4mo ago

if you want to combine them, it must be in a single if (foo == true || bar == false) { .. } and that means IF foo is true OR bar is false THEN (pseudocode)

rigamortusOP•4mo ago

ah i see IT WORKS OH MY DAYS IT WORKS YOURE A GODSEND

Buddy•4mo ago

Amazing! That's all I can help you for today. Good luck on your journey! 👋

rigamortusOP•4mo ago

THANK YOU 🙏

Buddy•4mo ago

Anytime. :catpog: $close

MODiX•4mo ago

If you have no further questions, please use /close to mark the forum thread as answered

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Programming

✅ need some help making a program