What is file?

FILE *file = fopen("file.txt", "r");

You can't get the size of a file that way... What you did gets the size of a pointer, which is 8 bytes on your CPU.

why the sizeof an empty file is 8? doesn't it just have EOF which is an int? and is worth 4

It’s not an sizeof file it’s sizeof pointer

sizeof(file);

sizeof returns size of type

and your type is FILE*

ok I understand .. thanks

I don't really understand your question, it seems like a reasonable one, if you could just clarify, I could try answering.

hmm okay lemme explain

/notes

you do this 1) create 'a' on stack 2) create 'a_ptr' on stack 3) create 'b' on stack 4) create 'c' on stack 5) change value at address of 'a_ptr' how is the 5th step done on lower level? does it simply 'shift' the stack pointer back by '-3' and change the value of 'a'?

/warn ot

you do this 1) create 'a' on stack 2) create 'a_ptr' on stack 3) create 'b' on stack 4) create 'c' on stack 5) change value at address of 'a_ptr' how is the 5th step done on lower level? does it simply 'shift' the stack pointer back by '-3' and change the value of 'a'?

When you have questions like this, you can actually make a test program and disassemble it. So when you call a function in C, the callee saves the stack pointer and uses offsets from it to access other variables. So in this case let's pretend 'a' is at rbp-0x08. 'a_ptr' will have the address of 'a' stored on the stack, so rbp-0x08. When you modify 'a' via 'a_ptr,' the address of 'a' gets read and it uses that address to access and modify 'a.'

Bois

I need to make a function whose input* is an array of tuples which in which the first element is an array and the second an integer

something like this [([1,2,3,4] ; 4) , ([5,6,7] ;5) ...]

how do I type the function is the questions sry if it's too dumb I already tried to google it

Thought about something like this : vector< pair< vector<int>,int> >

I was told yo use the pair type

You can also use std::array<std::pair<std::array<int, size1>, int>, size2> if you know the size of the two arrays already. An alternative would be to create a struct that holds an array and an integer and create an array of those objects

In a pair you can retrieve the elements with pair_name.first and pair_name.second, and that is a bit anonymous. Using a struct would allow you to call the variables with appropriate names. struct Your_Pair { std::array<int, size1> variable1; int variable2{0}; }; void function(std::array<Your_Pair, size2> &input) {}

/notes

/get cppbookguide

/notes

/get

/get freeprogrammingbooks

/get findprojects

/get noendl

how can i print a new line with linux system call "write" not with printf or putc ...

Honestly GCC is the exception to a lot of bs

No

i didn't find that particular thing their i am also not good at reading documentation 😅

It's just that I don't even remember how many years ago I even used GCC to do something wasn't aware of it

Nope does llvm ir

Any proofs?

LLVM IR is converted to assembly-like language at a backend part Not necessarily the target assembly itself

> assembly printer

Not a LLVM IR to target assembly compiler

True

Hey any cs engineer here?

C#? yup

oh :(

Hello all

Hi admin, I am sorry for that. It is not an advertisement, it is C code for CAN protocol. And tutorial. I would like to request you to remove this warning for me. And next time onwards before share I will get the permission from u. 👏👏👏👏👏👏👏👏👏

Nah

My fellow released an interesting C library @const_cast, I think you'll like it https://github.com/Hirrolot/poica

My fellow released an interesting C library @const_cast, I think you'll like it https://github.com/Hirrolot/poica

Lol if that guy is your fellow, I am not coming back to stdvector 😹😹

Lol if that guy is your fellow, I am not coming back to stdvector 😹😹

He's weird, but smart

Indeed

How to take 100 digits input in c language ? Please help me guys

gmp library

How many times can we use gets() function in whole program

Lol

Are you kidding me

How it may be possible

How many times can we use gets() function in whole program

Gets is removed from std library

Gets is removed from std library

No, it is still available in code blocks IDE

And I am using it

No, it is still available in code blocks IDE

If you use old standard. I strongly suggest to favor fgets

And I am using it

Use scanf or fgets

Use scanf or fgets

Scanf only take single character as input

Not complete string

It does not

It can read a string or a line too

It can read a string or a line too

Untill you press Enter

Thank

http://www.vishalchovatiya.com/c-template-a-quick-uptodate-look/ Brief on C++ Template: Types, Category, Arguments, Specialization(full, partial, non-type, nested), New rules/liberation added from C++11/14/17/20 & Use-cases.

http://www.vishalchovatiya.com/c-template-a-quick-uptodate-look/ Brief on C++ Template: Types, Category, Arguments, Specialization(full, partial, non-type, nested), New rules/liberation added from C++11/14/17/20 & Use-cases.

Mα∂ɦµ, @das_3sz3tt, @h4cktill, can you review it?

Thanks

https://github.com/chandradeepdey/single_view/ smol library i made. adds an extra template nontype parameter N to ranges::single that allows iterating over a single element N times. compatible with C++11 (and up i hope) code review?

https://github.com/chandradeepdey/single_view/ smol library i made. adds an extra template nontype parameter N to ranges::single that allows iterating over a single element N times. compatible with C++11 (and up i hope) code review?

Why there are so much repetitions of private / public keywords?

Why there are so much repetitions of private / public keywords?

categorises the functions

each public should be followed by a comment explaining the category

So notstd::single_view can be creates a new object, but what if I want to create it from already existing object? Only copy?

But what if it's not copyable?

If it's not movable?

Why does std::srand(std::time(nullptr)); result in Warnung: implicit conversion loses integer precision: 'time_t' (aka 'long') to 'unsigned int' ?

ahhh nvm

I forgot a cast

Why does std::srand(std::time(nullptr)); result in Warnung: implicit conversion loses integer precision: 'time_t' (aka 'long') to 'unsigned int' ?

Do not use rand and time

Do not use rand and time

why?