Problem Solving Strategies

Anusha

06:33

@JohnRennie i need ur help :-(

John Rennie

@Anusha Hi :-)

Anusha

hi

i spent 1 whole day on visual studio but i can't see the output

John Rennie

Do you mean you spent a day working on a project in Visual Studio?

Anusha

it showed 3 errors related to directories and i was working on fixing those errors through youtube videos

John Rennie

OK, and something happened to crash it?

Anusha

06:39

the problem pane shows no problem but when i run the program

John Rennie

Ah, you mean Visual Studio Code.

Anusha

yeah!

the program shows running and done but no output

John Rennie

If you click on "Terminal" what des it show?

Anusha

sending...

just a second

John Rennie

In the terminal type:

dir

and paste the output here. You can copy and paste from the terminal - you don't need to take a picture.

Anusha

06:48

PS C:\Users\Anusha Mahajan\Desktop\first> dir


    Directory: C:\Users\Anusha Mahajan\Desktop\first


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----        15-12-2021     11:27                .vscode


PS C:\Users\Anusha Mahajan\Desktop\first>

John Rennie

OK type:

cd .vscode
dir *.exe

Anusha

PS C:\Users\Anusha Mahajan\Desktop\first> cd.vscode
cd.vscode : The term 'cd.vscode' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ cd.vscode
+ ~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (cd.vscode:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

John Rennie

You missed out the space between cd and .vscode

Anusha

PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> cd .vscode
cd : Cannot find path 'C:\Users\Anusha Mahajan\Desktop\first\.vscode\.vscode' because it does not exist.
At line:1 char:1
+ cd .vscode
+ ~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (C:\Users\Anusha....vscode\.vscode:String) [Set-Location], ItemNotFoundExcep
tion
+ FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetLocationCommand

John Rennie

OK just type:

dir *.exe

(note the space)

Anusha

06:53

PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> dir *.exe


    Directory: C:\Users\Anusha Mahajan\Desktop\first\.vscode


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
-a----        15-12-2021     11:27          40766 m.exe


PS C:\Users\Anusha Mahajan\Desktop\first\.vscode>

John Rennie

OK. The file m.exe is your program. You can run it by just typing m

Run it now and see if it produces output.

Anusha

umm where to type m?

John Rennie

In the terminal. Just type m then press enter like you did for the previous commands you typed.

Anusha

PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> m
m : The term 'm' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling
of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ m
+ ~
+ CategoryInfo : ObjectNotFound: (m:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

Suggestion [3,General]: The command m was not found, but does exist in the current location. Windows PowerShell does not load commands from the current location by default. If…

John Rennie

Hmm, try:

.\m

Anusha

06:56

PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> .\m
congrats 6422293
PS C:\Users\Anusha Mahajan\Desktop\first\.vscode>

John Rennie

OK, your program ran and produced the output :

congrats 6422293

The reason is you wrote:

printf("congrats %d\n", name);

And %d prints a number not a string.

Anusha

ohk

but why is the output showcasing in terminal instead of output pane

John Rennie

For some reason VSCode is not showing the output from your program, but you can run it manually like we've just done to see the output.

Anusha

ohk will try now

John Rennie

I'm not sure why it's doing this, though i think I have heard other students say they have the same problem.

Incidentally you've got your .c files in the wrong place.

The way that it's supposed to work is that you put all the .c and .cpp files in:

C:\Users\Anusha Mahajan\Desktop\first

The subdirectory:

C:\Users\Anusha Mahajan\Desktop\first\.vscode

Anusha

07:02

i made the change and this is the output

[Running] cd "c:\Users\Anusha Mahajan\Desktop\first\.vscode\" && gcc m.c -o m && "c:\Users\Anusha Mahajan\Desktop\first\.vscode\"m
m.c: In function 'main':
m.c:4:22: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
     const char name ="anusha";
                      ^~~~~~~~

[Done] exited with code=3221225477 in 1.079 seconds

John Rennie

just holds config files used by VSCode.

Anusha

should i uninstall and try again?

John Rennie

No, there's no need to reinstall.

Fir now just carry on and everything will work.

But next time you create a new file create it in the first directory instead of in .vscode.

I can talk you through this if you want, or if you want to use TeamViewer we can both view your screen and I can show you how to do it.

Anyhow, the compile error is because you missed out the [] brackets.

It should be:

const char name[] ="anusha";

Because name has to be an array of char.

C doesn't have strings. In C a string is actually just an array of char.

Anusha

@JohnRennie would be a great help

John Rennie

If you go to:

teamviewer.com/en

There's a button "Download for free"

Anusha

07:07

i am downloading

John Rennie

Run the setup and click the Accept button without changing anything.

Anusha

it has some id and password

John Rennie

Yes. The way this works is you need to tell me the id and password, then I can connect to your PC so we can both see your screen.

Can you post the ID first ...

Anusha

Id: 676520296

John Rennie

Ah, for some reason when I try to connect to your PC I get an error

That's odd, Team Viewer normally works fine.

Anusha

07:14

I am supposed to give some permission maybe....

John Rennie

Try connecting to me to see if that works. My id is 228 049 579. Put that in as the "Remote control" id and click Connect

Anusha

Same error

John Rennie

:-( I think we're out of luck. I have seen this problem with other people in India. I would guess it's something to do with the way the internet connection works in India.

Are you connecting through your phone?

Anusha

Nope laptop

At the top there is enter partner Id. What's that?

John Rennie

I mean the Internet connection. Does that go via your phone? Or have you gor broadband connected to your house?

Anusha

07:18

Broadband

John Rennie

Hmm, OK, oh well :-(

I can talk you through it if you want.

Anusha

Pls I need this 😭

I have piles of due assignments

I tried connecting again and it shows either your partner isn't connected or your partner's TeamViewer isn't running pls tell your partner to check his internet connection or to start team viewer

Wolgwang

@Anusha How are you running the program?

John Rennie

Give me a moment and I'll set up VSCode to be the same as your setup

Wolgwang

@JohnRennie IG a VPN can work?

Anusha

07:24

@Wolgwang i wrote code on vsc then the run button

Wolgwang

@Anusha Run button ? Where? Debug and run?

Anusha

nope the triangle shaped run on top right

Wolgwang

@Anusha Can you post the screenshot? I haven't seen it >_<

John Rennie

@Anusha OK, this is roughly how your setup looks at the moment:

Anusha

@JohnRennie yes

John Rennie

07:29

Close you m.c file by clicking the X:

So it should now look like:

Anusha

there are some more tabs m.exe setting.json and m.c so i should cross all?

John Rennie

Yes, close all the tabs

Anusha

yeah same screen now

John Rennie

Type the command:

move m.* ..

That will move your program files out of the .vscode directory and into the first directory.

Anusha

ohk

John Rennie

07:34

Done?

Anusha

yes

John Rennie

Type:

cd ..

then:

dir m.*

And you should get something like:

Done?

Anusha

no this is not coming

John Rennie

Show me

Anusha

wait

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell aka.ms/pscore6

PS C:\Users\Anusha Mahajan\Desktop\first> move m.* ..
PS C:\Users\Anusha Mahajan\Desktop\first> cd ..
PS C:\Users\Anusha Mahajan\Desktop> dir m.*
PS C:\Users\Anusha Mahajan\Desktop>

John Rennie

07:38

Ah, type:

cd first\.vscode

then:

dir m.*

and show me the output

Done?

Anusha

isnt it cd \.vscode ?

John Rennie

Have you tried typing the commands I gave?

Anusha

yeah but tat also gave the same result

John Rennie

It should have looked like this

What does it look like on your PC?

Anusha

PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> move m.*
PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> cd ..
PS C:\Users\Anusha Mahajan\Desktop\first> cd first\.vscode
cd : Cannot find path 'C:\Users\Anusha Mahajan\Desktop\first\first\.vscode' because it does not exist.
At line:1 char:1
+ cd first\.vscode
+ ~~~~~~~~~~~~~~~~
    + CategoryInfo          : ObjectNotFound: (C:\Users\Anusha...t\first\.vscode:String) [Set-Location], ItemNotFoundExcep
   tion
    + FullyQualifiedErrorId : PathNotFound,Microsoft.PowerShell.Commands.SetLocationCommand

John Rennie

07:45

OK, type:

Wolgwang

Does this command give .vscode files in folder named 'first'?

John Rennie

cd .vscode

now type:

dir m.*

and show me the output.

Anusha

PS C:\Users\Anusha Mahajan\Desktop\first> cd .vscode
PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> dir m.*
PS C:\Users\Anusha Mahajan\Desktop\first\.vscode>

John Rennie

OK, type:

dir

and show me the output

Anusha

same

PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> dir
PS C:\Users\Anusha Mahajan\Desktop\first\.vscode>

John Rennie

07:48

OK. Type:

cd ..

Then:

dir

and show me the output

Anusha

PS C:\Users\Anusha Mahajan\Desktop\first\.vscode> cd ..
PS C:\Users\Anusha Mahajan\Desktop\first> dir


    Directory: C:\Users\Anusha Mahajan\Desktop\first


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----        15-12-2021     13:01                .vscode


PS C:\Users\Anusha Mahajan\Desktop\first>

John Rennie

OK. I'm not sure where your program file m.c has gone, but it was only a short file so we can recreate it.

In VSCode click File then New file

Anusha

yeah : -)

John Rennie

Copy and paste this:

#include <stdio.h>

int main(int argc, char* argv[])
{
    printf("Hello world\n");
    return 0;
}

(this is just an example to check everything is working)

Then click File then Save as

Anusha

ohk i am naming m.c

John Rennie

07:53

Wait!

Make sure you are saving it into the first directory.

Done?

Anusha

my path desktop>first>.vscode

John Rennie

No, not into the .vscode directory

Anusha

ohk

John Rennie

Just desktop>first

Done?

Anusha

done

John Rennie

07:58

Now in the terminal does the prompt show etc\first\.vscode> or just etc\first> ?

Anusha

till first

John Rennie

OK, so if you now type:

dir

You should get:

PS C:\Users\renniej\Desktop\first> dir m.*


    Directory: C:\Users\renniej\Desktop\first


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
-a----        15/12/2021     07:55            105 m.c


PS C:\Users\renniej\Desktop\first>

Anusha

PS C:\Users\Anusha Mahajan\Desktop\first> dir


    Directory: C:\Users\Anusha Mahajan\Desktop\first


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----        15-12-2021     13:27                .vscode
-a----        15-12-2021     13:27            105 n.c
-a----        15-12-2021     13:29          40764 n.exe


PS C:\Users\Anusha Mahajan\Desktop\first>

John Rennie

Cool :-)

Anusha

i was getting confused i changed m to n

John Rennie

08:01

OK, you called it n.c not m.c but that doesn't matter.

Anusha

output is showing under output tab:-)

John Rennie

You should be all set up now.

Anusha

i am crying thank you

i am late for my maths class my whole break got used bye...

John Rennie

VSCode can be fiddly to get working. I'm always happy to help. You only have to ask :-)

Bye :-)

satan 29

18:08

0

Q: Transfer learning on YOLOv5 for character and shape detection

The task is to detect rotated alphanumeric characters embedded on colored shapes. We will have an aerial view of the object (from a UAS: Unarmed Aerial System). Something of this sort: The task is to detect rotated alphanumeric characters embedded on colored shapes. We will have an aerial view of...

any data-science/AI/DL enthusiast

please help

Transcript for

Problem Solving Strategies