@programminginc - страница 1515

Punish3r

I can't prompt the user to enter the length of array every time..

Dima

what do you use?

BinaryByter

I can't prompt the user to enter the length of array every time..

use std::string or realloc

Tushar

Use pointer

BinaryByter

Use pointer

Thank you, he didn't know :)

Punish3r

use std::string or realloc

Using std:: string already.

BinaryByter

then you don't have a fixed size of chars

Punish3r

Thanks, I will try using pointers. And get back if I faced any more issues.

olli

Can't do that. The program I am working on take string input from user. The input can be of 5 chars or 10K chars including spaces The string is limited to 4095 chars only.

I cannot reproduce your issue. You can share your code?

BinaryByter

maybe he's using a less popular implementation of std::string ?

BinaryByter

or he's working on an embedded os that only allows one page for allocation?

BinaryByter

well, that wouldn't make too much sense 🤔

olli

I could imagine is a "string literal" where as this would contradict the "from user" part.

BinaryByter

Yea

Punish3r

or he's working on an embedded os that only allows one page for allocation?

I'm working on linux.. And I am using std::string.. The simple scenario is that whenever user enters a string of more than 4095 chars.. it gets discarded after the 4095th character.

BinaryByter

are you sure that its not an issue with the input stream?

Punish3r

are you sure that its not an issue with the input stream?

Input stream like.?

BinaryByter

https://stackoverflow.com/questions/39546500/how-to-make-scanf-to-read-more-than-4095-characters-given-as-input

BinaryByter

Input stream like.?

the input stream is the whole thing that takes a keypress - decodes it - writes it to a buffer - converts it to the required type (nontrivial in case of char* to int)

Punish3r

Nope.. I'm just copying and pasting the string..

BinaryByter

thats the same thing

Punish3r

What do you suggest then.?

Dima

https://stackoverflow.com/questions/39546500/how-to-make-scanf-to-read-more-than-4095-characters-given-as-input

> scanf

BinaryByter

> scanf

should apply to cin

Punish3r

https://stackoverflow.com/questions/39546500/how-to-make-scanf-to-read-more-than-4095-characters-given-as-input

The solution here is to change the terminal from canonical to non-canonical. But what if my program is not OS specific. I want to run it on Linux as well as Windows.

BinaryByter

your problem is os specific

Punish3r

your problem is os specific

You mean if I run it on windows the problem will resolve.?

BinaryByter

i don't know wether the windows CMD buffers like linux

Punish3r

Hmm. What should I i do then..?

Dima

should apply to cin

olli

You mean if I run it on windows the problem will resolve.?

No, your issue has nothing to do with C++ or C. It's based on the platform you execute your code on.

olli

Hmm. What should I i do then..?

Why do you need to read this huge amount of data?

BinaryByter

I read this as "I want to throw shit because you don't agree with my stance, but I actually have no idea of how this works"

BinaryByter

lol

Punish3r

Why do you need to read this huge amount of data?

To encrypt. 😜 Basically my program is an Encryption algorithm.

BinaryByter

Umm

BinaryByter

you should read /dev/urandom

olli

To encrypt. 😜 Basically my program is an Encryption algorithm.

why can't you read a file?

BinaryByter

also, std::cin should break after every word - meaning that you gotta have a very long word in order for cin not to do what you need

BinaryByter

are you encrypting german?

BinaryByter

if so, theres no need to encrypt it, nobody can understand it anyway ¯\_(ツ)_/¯

BinaryByter

😂

Punish3r

also, std::cin should break after every word - meaning that you gotta have a very long word in order for cin not to do what you need

I'm using getline

BinaryByter

get line is just wrapping the while loop you'd have to do in order to get stuff from cin

Droid

and scanf\

BinaryByter

scanf is reading until the next space too, iirc

Punish3r

why can't you read a file?

What if user don't want to read data from a file just want to copy the data ecrypt it and then paste the encrypted text back.. You know users can be dumb. 😆

Punish3r

are you encrypting german?

Naah, just English for now. 😀

BinaryByter

Naah, just English for now. 😀

english without any spaces?

olli

What if user don't want to read data from a file just want to copy the data ecrypt it and then paste the encrypted text back.. You know users can be dumb. 😆

Which user would copy paste 4K of text?!

Mihail

can the system clipboard even hold that much?

BinaryByter

can the system clipboard even hold that much?

does it have a limitation?

Punish3r

Which user would copy paste 4K of text?!

4k of chars that would hardly be 10,15 lines of text

BinaryByter

4k of chars that would hardly be 10,15 lines of text

"lines" -> even getline should break in between

Punish3r

english without any spaces?

getline don't break until \n

BinaryByter

getline don't break until \n

it uses cin internally

BinaryByter

unless you are giving it another stream

Daniele°

getline don't break until \n

fgets

Mihail

"lines" -> even getline should break in between

he meant wraped lines in a terminal

Punish3r

"lines" -> even getline should break in between

I'm using the text that comes as single line

BinaryByter

I'm using the text that comes as single line

I can't think of any text that comes as a single word as a single line

BinaryByter

and again: you can't solve that borderline without using system specific code

BinaryByter

so i'd not bother too much about it ¯\_(ツ)_/¯

Punish3r

I can't think of any text that comes as a single word as a single line

Don't think too much.. 😅

olli

The solution here is to change the terminal from canonical to non-canonical. But what if my program is not OS specific. I want to run it on Linux as well as Windows.

long story short. If you want to have it work cross plattform in ISO C/C++ and don't write system dependant code, read a file. There is no other solution

BinaryByter

long story short. If you want to have it work cross plattform in ISO C/C++ and don't write system dependant code, read a file. There is no other solution

^

Dima

I read this as "I want to throw shit because you don't agree with my stance, but I actually have no idea of how this works"

You got it wrong. :) Nvm.

BinaryByter

long story short. If you want to have it work cross plattform in ISO C/C++ and don't write system dependant code, read a file. There is no other solution

Actually, if you use the right POSIX interface, you should be able to read only a few chars at once

Dima

Actually, if you use the right POSIX interface, you should be able to read only a few chars at once

This