Mat

https://t.me/MrTeacherUZ

@admin

Group Butler

@admin

Reported to 1 admin(s)

Roxifλsz 🇱🇹

https://t.me/MrTeacherUZ

/warn not programming related

Group Butler

Shaxzod has been warned (1/3)

Mat

Hey guys my name is A.Z. I'm a software developer who's interested in C/C++, hardware, software, IoT and more I'm also the admin of the channel @cyberspyio which regularly releases content in regards to hardware, software, programming and IoT - it would be a big help for me if you could subscribe to that channel. Thank you! And I hope to learn something more about C/C++ by being in this channel :)

Welcome :) i don't think is nice to enter a group and advertise another one, but at least you have been nicer than a lot of other people :)

Chaser0x

Welcome :) i don't think is nice to enter a group and advertise another one, but at least you have been nicer than a lot of other people :)

Sorry about that - it's pretty hard to get subscribers these days especially those interested in technical concepts so it has just become a habit for me to talk about my channel when I introduce myself in a large group

Mat

Sorry about that - it's pretty hard to get subscribers these days especially those interested in technical concepts so it has just become a habit for me to talk about my channel when I introduce myself in a large group

At least you presented yourself :) I'll not subscribe 'cause I'm not interested, but i hope someone will pass there ;)

Chaser0x

Thanks

Kebun

is any ilustrative c programming book like head first?

Anonymous

/start

Anonymous

Are promotions allowed here?

Chaser0x

Well he deleted the channel now 😂

Chaser0x

Also clicking on random links is probably not the best judgement coming from a security standpoint

Chaser0x

for example if someone posted a t dot me link that looked suspicious unsuspecting people would just click on it

Mat

Are promotions allowed here?

Don't think so, at least without a motivation and without being polite. And if it is not so recurring

Sukesh

https://bitbucket.org/sukeshchand/udp-brodcasting-cpp I have started a repository for converting c code into cpp The repository is about udp-bradcasting. if any one interested, please contribute

Álvaro

is char in C signed?

Dima

yes

Dima

unsigned char = byte (255)

Dima

char = 127

Álvaro

👍thx

Stanislav

is char in C signed?

implementation defined, standard doesn't specify signed or unsigned for gcc you can control it with -funsigned-char or -fsigned-char

Dima

by defaults its always signed

Liam

by defaults its always signed

Nope, it depends on compiler and target platform. For ARM and PowerPC, it's typically unsigned, while for x86 and x64, it's typically signed.

Dima

this is strange, I remember exploring old projects (idtech and so on from 90s-00s) I saw something other lol

Álvaro

Thank you to all, I’m working with x86-64

Álvaro

Compiling with gcc

Group Butler

Start me to get the list of commands

Dima

#livingWith64GbSsd https://i.gyazo.com/ce1a13157ec13e1eb85adb599af89c79.png

Kenny

Some website where I can learn c++?

Kenny

If it is in Spanish better

P

#livingWith64GbSsd https://i.gyazo.com/ce1a13157ec13e1eb85adb599af89c79.png

What is this

Dima

windows sdk

Dima

it's required for windows so I can use system headers/libraries and tools

Álvaro

but u ain't space

Dima

now I have 500 mb

Dima

screw windows

Dima

linux/osx is much better in plan of taking space

Stanislav

it's required for windows so I can use system headers/libraries and tools

it's included in msvc installer

Dima

yeah but the fact it takes the same amount of storage

Dima

so lol

Stanislav

you want to download sdk installer for one reason - it's includes CDB installer

Stanislav

yeah but the fact it takes the same amount of storage

same as?

Dima

whether you use vs installer or use standalone sdk exe, there are no more options to customize installation, but nvm

Dima

I just needed headers/libraries lol

Anonymous

if you ask such questions you need to learn js instead

Arturo

hi

Anonymous

Hello

Anonymous

Hello

Anonymous

/help@GroupButler_bot

Group Butler

Start me to get the list of commands

Anonymous

sem3an: hello guys i need a open source software for a membership gym managment any one can help?

Anonymous

if we dynamically allocate 8 bytes, we can represent 8 byte numbers yeah? but even if I dynamically allocate, the pointer seems to point to a 4 byte location. it acts just like an integer. largest number i can represent even after a dynamic allocation of 8 bytes is 2147483647. that is also the max number represented by int variable

Anonymous

and int pointer can represent 2147483647 even if only 1 byte is allocated. I feel like I'm missing something

Liam

if we dynamically allocate 8 bytes, we can represent 8 byte numbers yeah? but even if I dynamically allocate, the pointer seems to point to a 4 byte location. it acts just like an integer. largest number i can represent even after a dynamic allocation of 8 bytes is 2147483647. that is also the max number represented by int variable

In the view of C and C++, an variable could be treated as a typed memory region. If you allocate 8 bytes memory, of course you could store a 64-bit number in it. However, do not forget the type. You will then also have to treat this region as a, for example, int64_t variable. On the other hand, pointer is an abstraction of memory space. If you get a valid pointer, you get 1) the address to that memory region, and you get 2) the type of it. Now, in your case, although you have a 8-byte memory region, you hold a pointer of type, for example, int32_t*. Hence, only 4 bytes will be used to store the integer, and the other 4 bytes remain unused. To solve this problem, reinterpret_cast the pointer to int64_t*. If only one byte is allocated for your integer, and a pointer typed in int32_t is pointing to the memory region, then writing behaviour through this pointer will infect the following 3-byte memory, thus undefined behaviour happens.

Anonymous

Got s8

Anonymous