How to sort positive and negative numbers alternatively this order (-1, 2, -3, 4, 5, -6)

Check qsort(), you will need to write comparator function which compares two elements using their modulus

Good morning guys Is anybody here from Cuba? Kindly PM pls.

Good morning guys Is anybody here from Cuba? Kindly PM pls.

This is not what this group is for

https://www.reddit.com/r/cpp/comments/bwwe58/c_performance_benchmarks_release_12/

Welcome

Hii sir

Good morning guys Is anybody here from Cuba? Kindly PM pls.

Why?

how to read a integer from file?

fscanf isn't working

how to read a integer from file?

It depends on how it's stored in file

Is it presented as text or in binary?

text

Read text into buffer and use sscanf

fscanf should work too

the number stored is one but it prints 28 everytime i run it

Hi

Read text into buffer and use sscanf

ok will try

the number stored is one but it prints 28 everytime i run it

Can we see the code?

yes

Use pastebin

wait

It might be that you are opening the file in binary read mode

Erm

Actually you are not calling fopen at all

I don't see you are opening file

Actually you are not calling fopen at all

^

so how to fix it ?

...

I think we gave some hints already :-)

ok letme try

😅 thank yiu

you*

FILE* file = fopen( ... );

you also need to check if the file was opened actually

and only after that you can read from it

it is working fine now void account::read_data(){ FILE *file; file = fopen("C:\\cfiles\\count.txt","r"); if(!file){ cout << "error\n"; } int ch; fscanf(file,"%d",&ch); cout << ch << "\n"; ch = ch+1; cout << ch << "\n"; fputc(ch,file); fclose(file);

thank you :)

i forgot i had changed the location of file🤦🏻‍♂️

it is working fine now void account::read_data(){ FILE *file; file = fopen("C:\\cfiles\\count.txt","r"); if(!file){ cout << "error\n"; } int ch; fscanf(file,"%d",&ch); cout << ch << "\n"; ch = ch+1; cout << ch << "\n"; fputc(ch,file); fclose(file);

This will crash if the file wasn't opened

This will crash if the file wasn't opened

yup, thanks for help :)

Why do you use C fopen if you are using C++?

cause i don't know how to read int from c++ style files😅

fstream filee("c:\\cfiles\\bankrecord.txt",ios::in|ios::out|ios::app); if(!filee.is_open()){ cout << "error in opening file\n"; } filee << ch << " Record\n"; filee << "Account holder name: " << name <<"\n"; filee << "Account number: " << acno <<"\n"; filee << "Amount: " << amount << "\n"; filee << "End\n"; cout << "File saved succesfully\n"; filee.close(); YOU MEAN THIS ?

Yeah but reading from there using streams

ok will try

😁

nah no need :D

I was just thinking why you mix those

why/

all functions fputc fgetc take pointer to files as argument

doesn't look clean ;)

doesn't look clean ;)

code?

In C++ you could do int a; ifstream ifs("file.txt"); ifs >> a; to read the integer to a

yeah worked will change the code thanks 😁

no problem :)

i want to read from file delete old data and save new which mode should i choose

as trunc will format it first and then store

and app will add it to last

all functions fputc fgetc take pointer to files as argument

you can use fstream instead

yup

😊

/kick

Lol

#ot

why you have to click these buttons

why you have to click these buttons

🤔

Hi! Nice to meet you all! I'm a student in Web&Cloud Architecutre

welcome

Welcome cut

It's not to take advantage of your skills immediately.... buuuuut there is anyone skilled with the Azure Storage queues to use, however, locally and not in the cloud? I think I Have to use the Storage Emulator...

Just for testing the queues

It's not to take advantage of your skills immediately.... buuuuut there is anyone skilled with the Azure Storage queues to use, however, locally and not in the cloud? I think I Have to use the Storage Emulator...

I think there should be docker image for local testing

Just like for S3

nono, there is an application pre-installed on W10 from the CMD

it's called Microsoft Storage Emulator

Oh

Even better

yes but the documentation is... haahha

Lol.