@programminginc - страница 1578

I_Interface

By default std::vector<bool> has false right?

U can test it fast...

Ludovic 'Archivist'

By default std::vector<bool> has false right?

Initialize it with (size, true) and you are done

Ludovic 'Archivist'

Also, it is worth noting that *std::vector<bool> works differently compared to other template<typename T> std::vector*

数学の恋人

Also, it is worth noting that *std::vector<bool> works differently compared to other template<typename T> std::vector*

Like?

数学の恋人

Initialize it with (size, true) and you are done

BTW thanks for this

Ludovic 'Archivist'

Like?

It is allowed to store 8 booleans per byte or any setup it likes for storing the booleans given that they are still in contiguous memory

数学の恋人

is nature a keyword in C++?

数学の恋人

ok it's not

scammer.xyz

Anybody know any idea to use c programming sockets to communicate with multiple client vice versa?

scammer.xyz

Using TCP protocol

Dima

yes

scammer.xyz

Communicate with 1 client at the time is easy

Dima

take a look on long polling

Wim

Probably he's having the issue he's responding on the port being connected to, making it unavailable to other clients

Wim

You know, Emile, you can respond from a different port on the request to keep the host-port open for multiple connections?

数学の恋人

#include <iostream> int main() { char letters[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; char oletters[] = "0123456789"; char random_name[5]; for(int i = 0; i < 5; i++) { switch(i) { case 0: random_name[i] = letters[rand() % 26]; break; case 1: random_name[i] = letters[rand() % 26]; break; case 2: random_name[i] = oletters[rand() % 10]; break; case 3: random_name[i] = oletters[rand() % 10]; break; case 4: random_name[i] = oletters[rand() % 10]; break; default: break; } } std::cout << "Random name thus generated is: " << random_name; return 0; } Please check is this program correct?

I_Interface

#include <iostream> int main() { char letters[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; char oletters[] = "0123456789"; char random_name[5]; for(int i = 0; i < 5; i++) { switch(i) { case 0: random_name[i] = letters[rand() % 26]; break; case 1: random_name[i] = letters[rand() % 26]; break; case 2: random_name[i] = oletters[rand() % 10]; break; case 3: random_name[i] = oletters[rand() % 10]; break; case 4: random_name[i] = oletters[rand() % 10]; break; default: break; } } std::cout << "Random name thus generated is: " << random_name; return 0; } Please check is this program correct?

mate, could u check it ?

数学の恋人

Well I did

数学の恋人

I'm not getting expected results

I_Interface

I'm not getting expected results

use debugger

I_Interface

and watch where it goes wrong

数学の恋人

But I was supposed to get something lke BS123 etc. etc.

数学の恋人

But I was supposed to get something lke BS123 etc. etc.

only 5 letters not more

I_Interface

only 5 letters not more

then watch after your algorithm

数学の恋人

use debugger

suggest me one

I_Interface

suggest me one

idk, look one for ide what u are using

数学の恋人

I'm using vim not an ide

I_Interface

hm

数学の恋人

is radare good?

数学の恋人

radare2

I_Interface

is radare good?

i didn't work with linux, sry) don't know it)

数学の恋人

Oh

Decoder_3d

So best ide is ?

I_Interface

So best ide is ?

windows - VS 2019 Mac - XCode for linux - idk)

akaWolf

So best ide is ?

emacs

mrphyber

emacs

It is an OS lol

mrphyber

I use it too

Anonymous

👍

Хамза

So best ide is ?

I use geany

Mihail

But I was supposed to get something lke BS123 etc. etc.

You aren't ending your string. You should add '\0' or simplly 0 once you're done writing to it.

Mihail

So cout prints it until the \0 and so you get random values after NW753 which is what your program generated

Mihail

Also that code is kinda bad

Mihail

Use 2 for's and remove the switch

Mihail

Would be way better

Mihail

Oh and seeing it's C++, just use std::string

Mihail

And rand isn't good for generating random numbers, because it's not a uniform distribution

Anonymous

yes when i tried creating a game, everytime rand gives same order of numbers.🙄

Nikolas

yes when i tried creating a game, everytime rand gives same order of numbers.🙄

did you initialize the seed?

Rostin

That might be a seed problem

Nikolas

I mean, rand is not good, but it doesn't always give the same order 😆

Anonymous

That might be a seed problem

what is seed problem?

Rostin

Check what Nikolas said

Anonymous

I mean, rand is not good, but it doesn't always give the same order 😆

What is seed?

Nikolas

https://en.cppreference.com/w/cpp/numeric/random/srand

Nikolas

(while the fact that rand() is not good stays true, of course)

Rostin

A "better" std alternative if mt19937

Anonymous

ok will check it out . Thanks When I googled it earlier it shows it follows a complete pattern of execution which produces same output everytime

Nikolas

srand() initializes the sequence of pseudo-random numbers that rand() gives. If you don't use srand(), it will always use 1 as seed number, so you will get always the same order

Nikolas

(this might be useful if, for example, you want to debug a program which uses rand(), since you will remove randomness from your code)

Mihail

A "better" std alternative if mt19937

^

I_Interface

ok will check it out . Thanks When I googled it earlier it shows it follows a complete pattern of execution which produces same output everytime

use uniform_int_distribution

Mihail

And put it in a uniform distribution