Why does it say pre C++11 undefined ? Does that mean it's not undefined in C++11 and onwards?

I see it says just undefined behavior, or what part are you referring to? i = ++i + i++; // undefined behavior

Why does it say pre C++11 undefined ? Does that mean it's not undefined in C++11 and onwards?

Some of these examples have been well-defined due to the rule changes in C++17 while others still remain undefined.

I see it says just undefined behavior, or what part are you referring to? i = ++i + i++; // undefined behavior

The heading. Pre-C++11 Definitions Pre-C++11 Rules Pre-C++11 Undefined Behaviour ...

Is there a c++ bot for tg

Is there a c++ bot for tg

I want one either

Is there a c++ bot for tg

What is a "c++ bot"?

That i can program in telegram

You do not make any sense I'd suggest to address your questions to ChatGPT from now Maybe the machine will be able to understand you

Bruh

U not very nice

That i can program in telegram

The telegram API and UI would make programming through a bot a terrible experience. It is better to download some C++ compiler app (there are multiple for Android and I expect should be for iOS)

Telegram is just not designed for that

well.. there is this

U not very nice

I'm not supposed to be

Aze sent a code, it has been re-uploaded as a file

The telegram API and UI would make programming through a bot a terrible experience. It is better to download some C++ compiler app (there are multiple for Android and I expect should be for iOS)

CXX Droid is very good also for Android

Hi, guys how many times the function getline(); can it be called within a loop structure to read a string? I'm trying to read a struct with two members a string name and an array age both with length 2. When I execute the reading inside the for getline(cin,p.name[i]); it is once name and age but the second time it no longer reads the name just the age is how it skips up on the second iteration.

Hi, guys how many times the function getline(); can it be called within a loop structure to read a string? I'm trying to read a struct with two members a string name and an array age both with length 2. When I execute the reading inside the for getline(cin,p.name[i]); it is once name and age but the second time it no longer reads the name just the age is how it skips up on the second iteration.

you might have to clear out the cin stream

cin.clear(); cin.ignore(10000,'\n');

I am seeking for the site that provides free courses along with the certificates..

do you guys know some.?

Certificates mean nothing

hey, is there a way to hide the output from execlp? I'm trying to pipe the output of a command to another and then read the result, but I only get the result on the terminal. I don't want this behaviour, I want that the second command runs and I get the output in a string, is it possibile? code: https://pastebin.com/5Mzr8eYa

Given that each sub-array has exactly 3 elements, element access can be done like this: for (int i = 0; i < 9; ++i) printf("%3d\n", arraysArray[i / 3][i % 3]); Also note that there are only 9 elements, so the end value of i should be 9.

hey, is there a way to hide the output from execlp? I'm trying to pipe the output of a command to another and then read the result, but I only get the result on the terminal. I don't want this behaviour, I want that the second command runs and I get the output in a string, is it possibile? code: https://pastebin.com/5Mzr8eYa

not much experienced with execlp but why not use popen, you can do that using popen

not much experienced with execlp but why not use popen, you can do that using popen

I can't do this with popen: man man | col -b

I can't do this with popen: man man | col -b

int main() { FILE* cmd = popen("echo oki | grep -o 'i'", "r"); char output[256]; while(fgets(output, sizeof(output), cmd)) { cout << output << endl; } return 0; }

this redirection in popen works for me

i can't send ss

this redirection in popen works for me

can you do this test pls? popen a "man man | col -b" and send me the hexdump -C of it

int main() { FILE* cmd = popen("echo oki | grep -o 'i'", "r"); char output[256]; while(fgets(output, sizeof(output), cmd)) { cout << output << endl; } return 0; }

i was originally to do that, but im on windows, i tested this on an online compiler and it doesn't have col

i was originally to do that, but im on windows, i tested this on an online compiler and it doesn't have col

ok thank you no prob

I should have fixed

The message was posted today

I see, so he possibly quoted that old message, and the bot quoted to answer

I want to develop a tetris game in c, which libraries do i need for making that? Ncurses? Sdl? Allergo? I don't know which one has the best functionality and mobility for graphic games?

I need someone to answer this😐

I want to develop a tetris game in c, which libraries do i need for making that? Ncurses? Sdl? Allergo? I don't know which one has the best functionality and mobility for graphic games?

SDL2 should be good for purposes of writing small games from scratch (in C or C++), it is not overly complex for simple games but supports doing complex stuff as well. It is crossplatform. It has good tutorials and many users.

Raylib is also a good choice. It provides cheatsheet for all apis and in my opinion it is easier to use than SDL.

SDL2 should be good for purposes of writing small games from scratch (in C or C++), it is not overly complex for simple games but supports doing complex stuff as well. It is crossplatform. It has good tutorials and many users.

Do u know a good source for SDL tutorial in c language? I only could find in c++

does anyone have c++ book in english

Do u know a good source for SDL tutorial in c language? I only could find in c++

Hm, not sure, I was using it with C++, I would guess it should be relatively simple to rewrite examples from lazyfoo to C from C++, I don't think he uses some complex C++ features in his examples

Hm, not sure, I was using it with C++, I would guess it should be relatively simple to rewrite examples from lazyfoo to C from C++, I don't think he uses some complex C++ features in his examples

Thank you

Plz Resolve my issue: https://github.com/leostratus/netinet/issues/1

Plz Resolve my issue: https://github.com/leostratus/netinet/issues/1

Redefinition of struct in bhot these libraries. For more error detail plz visit git issue

guys, I am new to makefile and I come across a makefile that with many "makefile variables ", I want to replace those variables with the actual value, how to do that

Redefinition of struct in bhot these libraries. For more error detail plz visit git issue

If this code is not owned by you then you should raise an issue with the library author. You shouldn't be using linux/in.h at all in your code. That is meant only to be used within the kernel.

Anyone Know How To Handle Wamp Server..??

I have a question Suppose we have a multiset of string Now I'm iterating over the set as for(string s: set){ Now if i delete all the elements within the set so in the next pass it is throwing an error } How can I fix it

I have a question Suppose we have a multiset of string Now I'm iterating over the set as for(string s: set){ Now if i delete all the elements within the set so in the next pass it is throwing an error } How can I fix it

use iterators instead to loop through the set

for (auto it = a.rbegin(); it != a.rend(); ++it) { a.erase(*it); } I used reverse iterators here because for some reason set returns a contant iterator if it's not reverse, it does the same thing anyway

oh, you used multiset, well the same logic with it

I have a question Suppose we have a multiset of string Now I'm iterating over the set as for(string s: set){ Now if i delete all the elements within the set so in the next pass it is throwing an error } How can I fix it

I can't reply to you in the chat for some reason, continue here

Hritik Kaushik sent a code, it has been re-uploaded as a file

im getting this error AddressSanitizer: heap-use-after-free on address @elfametesar

hold on

im getting this error AddressSanitizer: heap-use-after-free on address @elfametesar

lol maybe this isn't safe, cuz it's fighting me. when i use const iterator and delete the item, it's bad access. when i use regular iterator, it's the same. it only throws no error when i use reverse iterator but it doesn't remove properly, only 2 items out of 4

i mean i guess it shouldn't be safe since you're iterating through indexes and once you delete an index or insert an item, you break the hierarchy

maybe it would be safe to delete/insert using simpler types of containers, but since this is somewhat ordered, it poses a risk is what i think. idk tho, im not really an expert

actually i was trying to do something like a dfs here

so i dont pickup same element in the same path again i was removing it from the set

so i dont pickup same element in the same path again i was removing it from the set

idk, i might be wrong on how i go at it, i remember seeing in a tutorial about this specific thing where you wanna delete items while you're iterating through them, and i remember seeing the guy use iterators in for loop, but maybe i misremember it. ill check it out

idk, i might be wrong on how i go at it, i remember seeing in a tutorial about this specific thing where you wanna delete items while you're iterating through them, and i remember seeing the guy use iterators in for loop, but maybe i misremember it. ill check it out

but thank you so much for helping having someone to clear doubts is a blessing

but thank you so much for helping having someone to clear doubts is a blessing

is there a reason you're not using vectors

because the strings should be sorted if multiple path exists

i figured you needed sorting lol

that's the kinda thing that kinda ruins the for loop deletion thing for you ig

for (auto it = a.rbegin(); it != a.rend(); ++it) { a.erase(*it); } I used reverse iterators here because for some reason set returns a contant iterator if it's not reverse, it does the same thing anyway

cuz this works with vectors, i tested it

instead of deleting i will try to keep track of visited string maybe that will work

yeah

for (auto it = a.rbegin(); it != a.rend(); ++it) { a.erase(*it); } I used reverse iterators here because for some reason set returns a contant iterator if it's not reverse, it does the same thing anyway

Madhu sent a huge message, it has been re-uploaded as a file It should be for (auto it = a.begin(); it != a.end(); ){ //If elem must be deleted ..

lol

Madhu sent a huge message, it has been re-uploaded as a file It should be for (auto it = a.begin(); it != a.end(); ){ //If elem must be deleted ..

yeah, but it still doesn't matter, because sets and maps don't work that way

yeah, but it still doesn't matter, because sets and maps don't work that way

The point was that your code is wrong and I was saying why it is wrong. And why do you think you will not have such a use case? Deleting some elements at a stretch from a container (be it a map) seems to be a valid use case

lol

Yeah. I was pissed off too. Maybe an exception can be made for admins 😉

The point was that your code is wrong and I was saying why it is wrong. And why do you think you will not have such a use case? Deleting some elements at a stretch from a container (be it a map) seems to be a valid use case

i don't remember saying there was no such use case, of course there is. ik my code was wrong, i kinda played around after that and made some adjustments. i just couldn't get that working with sets and maps, and i assume it's the way their items are aligned

i don't remember saying there was no such use case, of course there is. ik my code was wrong, i kinda played around after that and made some adjustments. i just couldn't get that working with sets and maps, and i assume it's the way their items are aligned

Was my misunderstanding then. I was just trying to correct the code you posted anyway

Plz Resolve my issue: https://github.com/leostratus/netinet/issues/1

Tell whoever uses linux/in.h to stop and to use netinet/in.h, one is portable the other is not

hi guys，I want to custom deleter, but is error when i want two para:

class Test { public: Test() { cout << "Test()" << endl; } ~Test() { cout << "~Test()" << endl; } }; class Deleter_ { public: void del(Deleter_ &d, Test *p) { std::cout << "Deleting ..." << std::endl; delete p; } }; int main() { std::shared_ptr<Test> spTest; spTest.reset(new Test(), std::bind(&Deleter_::del, &d, _1));}

somebody help me? thank you guys..