@programminginc - страница 337

the point is , why it didn't return the type of the ( supposed to point to ) location but returned the size of the type of the pointer itself instead even tho I was casting it back with * mark , if I was doing it without it , such a thing would be expected but while I am not , its kinda odd ?

Aman

This is the reason a 32bit application can only allocate 4GB ram at Max (2^32)

It starts from 2^0 maybe. So 2^31

olli

Abdulkader Which one are you talking about? void *p; sizeof ((int*)p); Does return the size of the int pointer, you cast the void pointer to a int pointer , but you do not dereference it. So this returns the size of a pointer Writing sizeof(*(int*)p) it returns the size of an int. Since you cast it to an int pointer an then dereference it

olli

It starts from 2^0 maybe. So 2^31

Still there are 2^32 valid values. Beginning at 0 up to 2^32-1

Anonymous

Abdulkader Which one are you talking about? void *p; sizeof ((int*)p); Does return the size of the int pointer, you cast the void pointer to a int pointer , but you do not dereference it. So this returns the size of a pointer Writing sizeof(*(int*)p) it returns the size of an int. Since you cast it to an int pointer an then dereference it

ah , yeah true , now it makes sense

olli

ah , yeah true , now it makes sense

Once you understand it, it does make sense :) but it might take its time to get used to it

Anonymous

Once you understand it, it does make sense :) but it might take its time to get used to it

indeed , Ig am not done for now with pointers and stuff but gonna study some lisp tomorrow anyway while a friend has already recommended it , seems kinda pretty neat langauge

Anonymous

any thoughts about lisp btw ?

olli

any thoughts about lisp btw ?

I haven't come across a lisp project of interest, so I can't really comment on this

Anonymous

Welcome to C and C++

I really like them both even tho if they could get weird at somelevel and specially C could get rooted into lots of stuff like asm instructions , optimizations , drivers and etc , which idk a lot about them but at least trying to get used on C then I'll move to cpp which could also get weird al the level of the language structure itself , both are kinda able to being used in a complicated way afaik which I don't really love nor hate tbqh but ig its something I should deal with

Ибраги́м

I really like them both even tho if they could get weird at somelevel and specially C could get rooted into lots of stuff like asm instructions , optimizations , drivers and etc , which idk a lot about them but at least trying to get used on C then I'll move to cpp which could also get weird al the level of the language structure itself , both are kinda able to being used in a complicated way afaik which I don't really love nor hate tbqh but ig its something I should deal with

C++ is less wierd if and when u learn from the correct and good sources

Anonymous

C++ is less wierd if and when u learn from the correct and good sources

it could get weird at somelevel too with the templates and other concepts and the things could be kinda foggy at your head at somepoint if I am not wrong , not so sure about it but I've already hit some resources just with a fast look and the things wasn't as simple as java at all lol

Anonymous

even java could be easy (it just always makes sense) incompare to cpp cpp is more flexible and harder

Ибраги́м

it could get weird at somelevel too with the templates and other concepts and the things could be kinda foggy at your head at somepoint if I am not wrong , not so sure about it but I've already hit some resources just with a fast look and the things wasn't as simple as java at all lol

Oh, That is true very true. But by 2020, we should have less template problems with Concepts

Anonymous

I hope so , anyway , gonna sleep Gn everyone

Anonymous

and thanks for help

klimi

Hello my lovely snowflakes

Dima

klimi

Hello ^^

Isc

https://github.com/isc30/generic_optional

Anonymous

/saved

Anonymous

/saved

Bader

Hi guys!

Bader

C++ Noobie here, learning a bunch!

Bader

been watching cherno's vids

Isc

/saved

Zero

#cpp

Manish

/saved

Mat

We have an Off Topic group for those things

Md. Farzan

👍

Danni

How to add max min value on stack using linked list?

Anonymous

Kindly help How can i create a txt file in c++

Mat

Kindly help How can i create a txt file in c++

http://www.cplusplus.com/doc/tutorial/files/ Internet is full of wonders

klimi

been watching cherno's vids

Hm... Don't

Anonymous

hello!

Anonymous

in the libreoffice code, i found this: template<typename... Args>, what could ... mean?

Anonymous

the name of the typename?

Dima

three dots are template arguments

Dima

hence 'Args'

Anonymous

but the identifiers couldnt contain . characher in c++, right?

Anonymous

for example variable names could contain only letters, numbers, and _

olli

in the libreoffice code, i found this: template<typename... Args>, what could ... mean?

In this case the three dots represents a variadic template / parameter pack. As with template< class... Types > class tuple; it allows you to pass an arbitrary number of types. You can do std::tuple<int> but also std::tuple<int, int> and so on You are right, an identifier cannot contain a . charachter

Anonymous

thank you!

BinaryByter

Hello

Anonymous

Yh

Otumian

#cpp

BinaryByter

!yeH

klimi

Hello

welcome Maxi

klimi

hey Lulzx

Mohammed

Hi How can I convert a string to int in C++?

klimi

Hi How can I convert a string to int in C++?

what?

klimi

like digits?

Mohammed

Yes

klimi

how did you get such input?

Mohammed

I have a number string And I wanna convert it to integer

BinaryByter

I have a number string And I wanna convert it to integer

Thats nice for you!

Anonymous

I have a number string And I wanna convert it to integer

atoi

BinaryByter

atoi

no

Anonymous

why not? it works

BinaryByter

it works

BinaryByter

but it's C

Mat

http://www.cplusplus.com/reference/string/stoi/

BinaryByter

using C in C++ is just bad

BinaryByter

use std::stoi (std::string);