C#•14mo ago

✅ return to start of the code after a while loop break

hi eggy pls help me here

151 Replies

here we are. Thank you for helping out. So I don't know why but the Executionflow confuses me a wee bit, so I thought I would replicate your scenario to see where I am fekking up.

🃏OP•14mo ago

so lemme explain it quickly in short

EntireTeamIsBabies•14mo ago

namespace Beräknare_V1._0
{
    class  Program
    {

        static void main(string[] args )
        {
        
        Console.Writeline("Välj följande alternativ mellan 1-12 för att beräkna:");
        
        string MainInput = Console.ReadLine();

        while (true)
        {
            if (int.TryParse(MainInput, out UserMainInput))
            {

                while (UserMainInput >= 1 && UsermainInput <= 13)
                {
                    Console.Clear();
                    if (UserMainInput >= 13)
                    {
                        Console.Writeline("Ogiltig val, du kan bara välja mellan 1-12");
                        Console.Readline();
                    }
                    else
                    {
                        Console.Writeline("om du ser det här så har du gjort while loop rätt som 1 till 12 bara");

                        break;

                    }

                }
                Console.ReadLine();
                break;

            }
            else
            {
                Console.WriteLine("Ogiltig information, välj en beräkning mellan 1-12.");
                Console.ReadLine();
                break
            }
          }

}

namespace Beräknare_V1._0
{
    class  Program
    {

        static void main(string[] args )
        {
        
        Console.Writeline("Välj följande alternativ mellan 1-12 för att beräkna:");
        
        string MainInput = Console.ReadLine();

        while (true)
        {
            if (int.TryParse(MainInput, out UserMainInput))
            {

                while (UserMainInput >= 1 && UsermainInput <= 13)
                {
                    Console.Clear();
                    if (UserMainInput >= 13)
                    {
                        Console.Writeline("Ogiltig val, du kan bara välja mellan 1-12");
                        Console.Readline();
                    }
                    else
                    {
                        Console.Writeline("om du ser det här så har du gjort while loop rätt som 1 till 12 bara");

                        break;

                    }

                }
                Console.ReadLine();
                break;

            }
            else
            {
                Console.WriteLine("Ogiltig information, välj en beräkning mellan 1-12.");
                Console.ReadLine();
                break
            }
          }

}

` This is what I copied

🃏OP•14mo ago

so i have a school assignment where i need to make 12 different calculators that i know how to make and now is the issue where i forgot how to return back to the start of the code when it breaks out of that specific loop when the user types in a char instead of a int

EntireTeamIsBabies•14mo ago

It's true that this Gives hickups. The ReadLine-Method takes String by default, and your TryParse Operation Is correct.

🃏OP•14mo ago

and the first if statement says that if it cannot parse it from a string to a int that is bigger than 1 and less the 13 it will spit out a line where it says "wrong information given please pick a calculation between the numbers 1-12 point of the tryparse is that i ensure the user dont input a char instead of a int by accident

EntireTeamIsBabies•14mo ago

This is also good. It's just doing the same verification from a different angle. I'm going to run your code line-by-Line with the debugger, to see how this Execution context does it's work. good?

🃏OP•14mo ago

mhm just pointing it out again that everything works perfectly fine but on the last part i want it to return to the start of the code again but i dont know how to tell it im new to programming hehe this is the first year of programming in my high school at sweden

EntireTeamIsBabies•14mo ago

I am myself a Self employed Graphic designer Rolling into C# from Python, So much of what we're doing now I am supposed to be capable of handling, but I too am learning this. I'm currently making a mess of brackets, sorry.

🃏OP•14mo ago

haha np man take youre time

Pobiega•14mo ago

Have you learned about methods yet? A great way to solve this would be to break up your really big Main method in smaller methods

🃏OP•14mo ago

nope dont even know what that is

Pobiega•14mo ago

ok... what about switch?

🃏OP•14mo ago

ah yeah know about dat

Pobiega•14mo ago

Can you see a good usecase for it here?

🃏OP•14mo ago

https://www.w3schools.com/cs/index.php

W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

🃏OP•14mo ago

this is what we are following rn from our teacher we on bool rn

EntireTeamIsBabies•14mo ago

W3 is a good source for rookie-material. But in all fairness, they are a bit hesitant on updating on new changes.

Pobiega•14mo ago

huh? but bool is above both switch, if/else, while... what the helvete is your lärare doing

🃏OP•14mo ago

bro its a spanish teacher that is teaching us he can barely teach other people in a proper way like i have to go out of my way and go teach my self cuz how bad this only programming teacher we have at our high school

Pobiega•14mo ago

🙂 Unfortunately this is not rare "Don't let school get in the way of your education" is a saying for a reason

🃏OP•14mo ago

im at school for a reason bro i want to be tought/teached 🤣

EntireTeamIsBabies•14mo ago

lol, I get no errors from inside the code, but somehow the Main method is not being recognised as a valid entry point. Current code looks like this:

namespace Beräknare_V1_0
{
    class  Program
    {

        static void main(string[] args )
        {
        
        Console.Writeline("Välj följande alternativ mellan 1-12 för att beräkna:");
        
        string MainInput = Console.ReadLine();

        while (true)
        {
            if (int.TryParse(MainInput, out UserMainInput))
            {

                while (UserMainInput >= 1 && UsermainInput <= 13)
                {
                    Console.Clear();
                    if (UserMainInput >= 13)
                    {
                        Console.Writeline("Ogiltig val, du kan bara välja mellan 1-12");
                        Console.Readline();
                    }
                    else
                    {
                        Console.Writeline("om du ser det här så har du gjort while loop rätt som 1 till 12 bara");

                        break;

                    }

                }
                Console.ReadLine();
                break;

            }
            else
            {
                Console.WriteLine("Ogiltig information, välj en beräkning mellan 1-12.");
                Console.ReadLine();
                break
            }
        }
        
        }

        
    }
}

namespace Beräknare_V1_0
{
    class  Program
    {

        static void main(string[] args )
        {
        
        Console.Writeline("Välj följande alternativ mellan 1-12 för att beräkna:");
        
        string MainInput = Console.ReadLine();

        while (true)
        {
            if (int.TryParse(MainInput, out UserMainInput))
            {

                while (UserMainInput >= 1 && UsermainInput <= 13)
                {
                    Console.Clear();
                    if (UserMainInput >= 13)
                    {
                        Console.Writeline("Ogiltig val, du kan bara välja mellan 1-12");
                        Console.Readline();
                    }
                    else
                    {
                        Console.Writeline("om du ser det här så har du gjort while loop rätt som 1 till 12 bara");

                        break;

                    }

                }
                Console.ReadLine();
                break;

            }
            else
            {
                Console.WriteLine("Ogiltig information, välj en beräkning mellan 1-12.");
                Console.ReadLine();
                break
            }
        }
        
        }

        
    }
}

did I forget somehting?

Pobiega•14mo ago

I'm confused. Who is helping who here? 😄

🃏OP•14mo ago

EntireTeamIsBabies•14mo ago

I am ( trying to help him out) but I am not as speedy as I want to be.

🃏OP•14mo ago

um how do i do the grey thingis like your text

Pobiega•14mo ago

$codegif

MODiX•14mo ago

https://cdn.discordapp.com/attachments/364492811489509376/892176158312001586/code.gif

🃏OP•14mo ago

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Beräknare_V1._0
{
    class Program
    {
        static void Main(string[] args)
        {

            int UserMainInput;

            Console.WriteLine("Välj följande alternativ mellan 1-11 för att beräkna: ");
            String MainInput = Console.ReadLine();
            while (true)
            {
                if (int.TryParse(MainInput, out UserMainInput))
                {

                    while (UserMainInput >= 1 && UserMainInput <= 12)
                    {
                        Console.Clear();
                        if (UserMainInput >= 12)
                        {
                            Console.WriteLine("Ogiltig val, du kan bara välja mellan 1-11.");
                            Console.ReadLine();
                        }
                        else
                        {
                            Console.WriteLine("om du ser det här så har du gjort while loop rätt som 1  till 11 bara");
                            
                            break;
                        }

                        
                    }
                    Console.ReadLine();
                    break;

                }
                else
                {
                    Console.WriteLine("Ogiltig tal, välj en beräkning mellan 1-11. ");
                    Console.ReadLine();

                }
            }





 
            

        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Beräknare_V1._0
{
    class Program
    {
        static void Main(string[] args)
        {

            int UserMainInput;

            Console.WriteLine("Välj följande alternativ mellan 1-11 för att beräkna: ");
            String MainInput = Console.ReadLine();
            while (true)
            {
                if (int.TryParse(MainInput, out UserMainInput))
                {

                    while (UserMainInput >= 1 && UserMainInput <= 12)
                    {
                        Console.Clear();
                        if (UserMainInput >= 12)
                        {
                            Console.WriteLine("Ogiltig val, du kan bara välja mellan 1-11.");
                            Console.ReadLine();
                        }
                        else
                        {
                            Console.WriteLine("om du ser det här så har du gjort while loop rätt som 1  till 11 bara");
                            
                            break;
                        }

                        
                    }
                    Console.ReadLine();
                    break;

                }
                else
                {
                    Console.WriteLine("Ogiltig tal, välj en beräkning mellan 1-11. ");
                    Console.ReadLine();

                }
            }





 
            

        }
    }
}

Pobiega•14mo ago

you skipped a step

🃏OP•14mo ago

that is ?

EntireTeamIsBabies•14mo ago

cs after the first backticks

Pobiega•14mo ago

its tripple backtick, cs, enter paste enter tripple backtick enter

EntireTeamIsBabies•14mo ago

disco!

🃏OP•14mo ago

mhm but now how do i make it return to the top of the code after a string has been inputed

Pobiega•14mo ago

let me clean that up for you

public class Program
{
    public static void Main()
    {
        int userMainInput;

        Console.WriteLine("Välj följande alternativ mellan 1-11 för att beräkna: ");
        string mainInput = Console.ReadLine();
        while (true)
        {
            if (int.TryParse(mainInput, out userMainInput))
            {
                while (userMainInput >= 1 && userMainInput <= 12)
                {
                    Console.Clear();
                    if (userMainInput >= 12)
                    {
                        Console.WriteLine("Ogiltig val, du kan bara välja mellan 1-11.");
                        Console.ReadLine();
                    }
                    else
                    {
                        Console.WriteLine(
                            "om du ser det här så har du gjort while loop rätt som 1  till 11 bara");
                        break;
                    }
                }

                Console.ReadLine();
                break;
            }
            else
            {
                Console.WriteLine("Ogiltig tal, välj en beräkning mellan 1-11. ");
                Console.ReadLine();
            }
        }
    }
}

public class Program
{
    public static void Main()
    {
        int userMainInput;

        Console.WriteLine("Välj följande alternativ mellan 1-11 för att beräkna: ");
        string mainInput = Console.ReadLine();
        while (true)
        {
            if (int.TryParse(mainInput, out userMainInput))
            {
                while (userMainInput >= 1 && userMainInput <= 12)
                {
                    Console.Clear();
                    if (userMainInput >= 12)
                    {
                        Console.WriteLine("Ogiltig val, du kan bara välja mellan 1-11.");
                        Console.ReadLine();
                    }
                    else
                    {
                        Console.WriteLine(
                            "om du ser det här så har du gjort while loop rätt som 1  till 11 bara");
                        break;
                    }
                }

                Console.ReadLine();
                break;
            }
            else
            {
                Console.WriteLine("Ogiltig tal, välj en beräkning mellan 1-11. ");
                Console.ReadLine();
            }
        }
    }
}

tada

🃏OP•14mo ago

thx now HOW cuz i need to hand this is today

Pobiega•14mo ago

There is quite a bit wrong with this code as is to be honest

🃏OP•14mo ago

that is pls tell me

EntireTeamIsBabies•14mo ago

to manipulate controlflow of your code you could employ jumpstatements. But they are generally frowned upon.

Pobiega•14mo ago

Well, look at where you read the input and where you parse it those should reasonably be next to eachother, and definately not on either side of a while(true)

🃏OP•14mo ago

point of that is so the user does not enter a char instead of a int

Pobiega•14mo ago

I understand that But how many times does this code ask the user to write a value?

🃏OP•14mo ago

only once

Pobiega•14mo ago

only once. so if you gave it... say "cheese"

🃏OP•14mo ago

oooooooooooooooooooooooooooooooooooooooooooh now i get it

Pobiega•14mo ago

it will actually end in a forever loop that you cant escape

🃏OP•14mo ago

i put the input part in a while loop to

Pobiega•14mo ago

yes

🃏OP•14mo ago

HAHHAHA thanks bro youre the best I LOVE YOU

EntireTeamIsBabies•14mo ago

he is cheers mate.

🃏OP•14mo ago

i was literally thinking for an hour today in the class and i couldnt figure out what the next step to do

Pobiega•14mo ago

you tell us I can immediately identify one thing thats not quite right thou

🃏OP•14mo ago

that is ?

Pobiega•14mo ago

In what scenario can the execution reach the red marked line

🃏OP•14mo ago

after it tried the parse

Pobiega•14mo ago

all the needed information is in the screenshot.

🃏OP•14mo ago

so i have to have the input check first then it tells me that the info is wrong or not right ?

Pobiega•14mo ago

Im not sure what you are asking tbh but its not relevant to my question

🃏OP•14mo ago

nvm yeah it is

Pobiega•14mo ago

Look at the piece of code I screenshotted and where the red line is

🃏OP•14mo ago

im just mind fucking u hehe

Pobiega•14mo ago

assume we reach the while loop when can we enter the if? during what scenario/condition?

🃏OP•14mo ago

when the number is smaller then 12 no no bigger

Pobiega•14mo ago

right. But when can we enter the while loop?

🃏OP•14mo ago

when the input is smaller then 12 so 11

Pobiega•14mo ago

well, between 1 and 12 so a value that is guaranteed to be between 1 and 12... can't really be above 12, can it?

🃏OP•14mo ago

bro bro i forgot to tell you the point of that is to tell the user that you can only pick thrue these numbers

Pobiega•14mo ago

I understand

🃏OP•14mo ago

then it enters the if and tells the user

EntireTeamIsBabies•14mo ago

That is what kept throwing me off. I thought i was losing the ability to read lol

🃏OP•14mo ago

its the swedish part haha

Pobiega•14mo ago

Uncle. Look at my bio.

Pobiega•14mo ago

🃏OP•14mo ago

vänta vah hahaha

Pobiega•14mo ago

See anything that stands out? 😛

🃏OP•14mo ago

HAHHAHAHAHAHHAHA so i take that back what i said

EntireTeamIsBabies•14mo ago

Glad to have you on board tho.

Pobiega•14mo ago

Now, back to the numbers

🃏OP•14mo ago

yes

Pobiega•14mo ago

Can you name a number that is between 1 and 12, but also greater than 12

🃏OP•14mo ago

5 and 13 ?

Pobiega•14mo ago

no a single number

🃏OP•14mo ago

hm dafuq

Pobiega•14mo ago

indeed its a trick question, its obviously impossible

🃏OP•14mo ago

so i have not told it what number i want it to be on the else part right ?

Pobiega•14mo ago

What im trying to get to is...

🃏OP•14mo ago

Pobiega•14mo ago

bro chill I need to draw

🃏OP•14mo ago

ok mb

Pobiega•14mo ago

the red block is only ever accessed by a number that is 1 to 12 the green block is only ever accessed by a number that is both between 1-12, but also equal too or greater than 12 thats a really convoluted way to say 12 you could easily remove the green block and just reduce the top limit by 1 in the while however that while is itself weird its a while with a constant condition, as you never modify userMainInput inside the loop so its another forever-loop 🙂

🃏OP•14mo ago

well i have before the loop i think nvm

Pobiega•14mo ago

sure before the loop but a loop with a constant condition is the same as while(true) (assuming your condition evaluates to true)

🃏OP•14mo ago

what the hell thats the wrong code kompis det är fel

Pobiega•14mo ago

its your code. or whatever was pasted here I did not write this 😛

🃏OP•14mo ago

wait heres the original

Pobiega•14mo ago

here is the code I took

🃏OP•14mo ago

so basically youre trying to tell me the 2 while loops is useless only need 1 right ? remove the true on and just add it to the if statement

Pobiega•14mo ago

🃏OP•14mo ago

fan

Pobiega•14mo ago

if only 1 to 11 are the valid numbers, why does your condition allow 12?

EntireTeamIsBabies•14mo ago

It's the peculiar conditioning for those 2 loops that make for unnessecery nesting, - if those conditions never will be met then the code is not following its function

🃏OP•14mo ago

i fixed that to 11

Pobiega•14mo ago

why is the message about invalid numbers INSIDE the body that has been checked so the number is valid? ok, updated now the value is 1-11, so it can never be 12 or greater so we can remove the green block

🃏OP•14mo ago

exactly yes

Pobiega•14mo ago

it now looks like this

while (userMainInput >= 1 && userMainInput <= 11)
{
    Console.WriteLine(
        "om du ser det här så har du gjort while loop rätt som 1  till 11 bara");
    break;
}

while (userMainInput >= 1 && userMainInput <= 11)
{
    Console.WriteLine(
        "om du ser det här så har du gjort while loop rätt som 1  till 11 bara");
    break;
}

🃏OP•14mo ago

well bro the point of that green block i just remembered that i wanted to tell the user that

Pobiega•14mo ago

that loop will get broken immediately, meaning this is just a weird way to write if 😄 I know you dont need to explain Im saying you dont need that block, because you already have that block

🃏OP•14mo ago

so if its not 1-11 it just countinues on the next part of the code ?

Pobiega•14mo ago

yes

🃏OP•14mo ago

Pobiega•14mo ago

so you see how thats literally just an if right?

🃏OP•14mo ago

yeah yeah

Pobiega•14mo ago

cool

🃏OP•14mo ago

ill just add other part where to check if its a string or a int

Pobiega•14mo ago

btw, I want to change something fairly big.. do you know what !true is?

🃏OP•14mo ago

not true ?

Pobiega•14mo ago

exactly

🃏OP•14mo ago

teach me

Pobiega•14mo ago

The way you are structuring your code right now with increasing levels of nesting is... not great we can inverse most of those nestings

🃏OP•14mo ago

realised that

Pobiega•14mo ago

for example, the loop that makes sure you entered a valid value? well if we inverse that...

🃏OP•14mo ago

how will it look like

Pobiega•14mo ago

int userMainInput;

Console.WriteLine("Välj följande alternativ mellan 1-11 för att beräkna: ");
while (true)
{
    string mainInput = Console.ReadLine();
    if (int.TryParse(mainInput, out userMainInput))
    {
        break;
    }

    Console.WriteLine("Ogiltig tal, välj en beräkning mellan 1-11. ");
}

// at this point, we know the value is a number.

if (userMainInput >= 1 && userMainInput <= 11)
{
    Console.WriteLine("om du ser det här så har du gjort while loop rätt som 1  till 11 bara");
}

Console.ReadLine();

int userMainInput;

Console.WriteLine("Välj följande alternativ mellan 1-11 för att beräkna: ");
while (true)
{
    string mainInput = Console.ReadLine();
    if (int.TryParse(mainInput, out userMainInput))
    {
        break;
    }

    Console.WriteLine("Ogiltig tal, välj en beräkning mellan 1-11. ");
}

// at this point, we know the value is a number.

if (userMainInput >= 1 && userMainInput <= 11)
{
    Console.WriteLine("om du ser det här så har du gjort while loop rätt som 1  till 11 bara");
}

Console.ReadLine();

its now a lot shorter we should fix a few more things thou we should keep asking them for a number until its not just a number, but a number between 1 and 11 so why not do that in the same loop? Can you figure out a way to do that?

🃏OP•14mo ago

so my code works fine just the issue is that i have nested the shit that makes the loop for the number checking fuck up if the value is between 1-11 right ? alltså kåden startar ej om och säger att du har valt fel nummer istället så stänger den ba av ellerhur ?

Pobiega•14mo ago

? English only on the server please. I honestly kinda dont know what "works" looks like, Im just fixing issues as I see them bad design is an issue in my eyes 🙂

🃏OP•14mo ago

mhm you did thx for the help man lemme fix it and ill show u how it looks

EntireTeamIsBabies•14mo ago

Also Thanks for letting me tag along.

Pobiega•14mo ago

any time 😄 list of help threads I'm active in

🃏OP•14mo ago

 class Program
    {
        static void Main(string[] args)
        {

            int UserMainInput;

            while (true)
            {
                Console.Clear();
                Console.WriteLine("Välj följande alternativ mellan 1-12 för att beräkna: ");
                String MainInput = Console.ReadLine();

                if (int.TryParse(MainInput, out UserMainInput))
                {

                    break;
                }

                Console.Clear();
                Console.WriteLine("Ogiltig information, välj en beräkning mellan 1-12. ");
                    Console.ReadLine();
            }

            if(UserMainInput >= 1 && UserMainInput <= 12)
            {
                Console.WriteLine("om du ser det här så har du gjort while loop rätt som 1  till 12 bara");
                Console.ReadLine();
            }



 
            

        }
    }

 class Program
    {
        static void Main(string[] args)
        {

            int UserMainInput;

            while (true)
            {
                Console.Clear();
                Console.WriteLine("Välj följande alternativ mellan 1-12 för att beräkna: ");
                String MainInput = Console.ReadLine();

                if (int.TryParse(MainInput, out UserMainInput))
                {

                    break;
                }

                Console.Clear();
                Console.WriteLine("Ogiltig information, välj en beräkning mellan 1-12. ");
                    Console.ReadLine();
            }

            if(UserMainInput >= 1 && UserMainInput <= 12)
            {
                Console.WriteLine("om du ser det här så har du gjort while loop rätt som 1  till 12 bara");
                Console.ReadLine();
            }



 
            

        }
    }

fixed it yay works perfectly as i wanted

Pobiega•14mo ago

.. I somehow doubt that

🃏OP•14mo ago

whaaat why you dont have faith in the newcomer it actually works try it

Pobiega•14mo ago

I dont need to. I can read it

🃏OP•14mo ago

ah ok

Pobiega•14mo ago

wait, oooh. You only wanted to validate numbers= that was the entire programs purpose?

🃏OP•14mo ago

what now HAHHAA YESSSS

Pobiega•14mo ago

wtf

🃏OP•14mo ago

then i can continue with the rest

Pobiega•14mo ago

also, the if() { break; } makes me feel very uneasy 😄 I know I wrote it, but it feels so bad

EntireTeamIsBabies•14mo ago

lol, I thought it had to represent a calculation. 🙂

🃏OP•14mo ago

it does

Pobiega•14mo ago

the namespace is literally "calculator"

🃏OP•14mo ago

now i can just paste everything in

EntireTeamIsBabies•14mo ago

Cheers tho. I'm off for homework.

🃏OP•14mo ago

the calcutlation of second degree question, quadratic calculation this is the main is i had now everything is gonna run perfectly fine yo @Pobiega you still there ?

Pobiega•14mo ago

Every now and then

🃏OP•14mo ago

you still there ? ?

Pobiega•14mo ago

just ask your question

Gaming

Programming

✅ return to start of the code after a while loop break