Can we sort a string using sort function

I got run time error in this program This is a merging two sorted array #include<iostream> using namespace std; int main(){ int arr1[5]={1,8,10,12,20}; int arr2[3]={0,2,6}; int sorted[8]; int pos1=0, pos2=0; for (int i=0; i<8; i++) { if (arr1[pos1]<=arr2[pos2]) { sorted[i]=arr1[pos1]; pos1++; } else { sorted[i]=arr2[pos2]; pos2++; } } for(int i=0;i<8;i++){ cout<<sorted[i]<<endl; } return 0; }

how do i split a vector into multiple vectors that contain duplicates of whatever elements are found? eg { 1, 1, 2, 3, 3, 2, 4 } -> {1, 1}, {2, 2}, {3, 3}, {4}

What IDE do you use for C++ develop in macos?

I've built a user thread library in C++ . Now, using Googletest framework to test the functionality of my library, when I call ASSERT_EXIT to verify the number of exit code, the exit code that is returned is always 1, and 0 is expected. I've debugged it. and I exit the program with std::exit(0), and not with 1. But, for some strange reason, I've checked the assembly of this std::exit(0) and I got: __GI_exit: endbr64 push rax pop rax mov ecx,0x1 mov edx,0x1 lea rsi,[rip+0x1a1b41] ; 0x7f79946c3718 <__exit_funcs> sub rsp,0x8 call 0x7f7994521930 ; <__run_exit_handlers> That is, the assembly of std::exit always returns exit code = 1 !! Why is that? Even if I change it to std::exit(5) it still exits with 1.

Can you show us how you are testing the library (a MVCE)? You can use a site like pastebin.com to post your code

Using GoogleTest framework on Linux machine. Also, my IDE is CLion. I've managed to solve this certain problem, the problem was that an exception was thrown, so the program actually exited by the exception and not by my std::exit. Thank you

My point was to see how you you were testing exit code from threads and to see if you inadvertently were seeing exit codes from a thread other than the one you were checking. Since you have solved your problem already this is a moot point anyway

Yeah. And I checked it using ASSERT_EXIT routine provided by the GoogleTest framework

If you have doubts on what exit code was used and you are within the assembly of std::exit before the exit handlers are called, you can just check the value of register rcx before it is set to 1 and see if that value is what you passed in

How can I permanently configure CLion to always going through the forked process while debugging the program? For now, every time I want CLion's GDB to include the debugging execution of the forked process, I have to initially breakpoint at the thread which forks, typing in GDB console these two commands: set follow-fork-mode child, set detach-on-fork off, and then typing continue to get into the second breakpoint inside the forked process.

Not familiar with that IDE. GDB offers better support for such tasks but not all IDEs offen a convenient interface for the same. So I am afraid you must do it via command line.

What IDE do you use for C++ develop in macos?

For any os, just use vim. It takes some time to get used to and to configure it they way you need it, but you will be more productive in the long run. Also there are great plugins for vim/neovim that can support you with suggested keywords and so on

Vim aint a IDE though. It's really useful to know vim shortcuts and key combinations but it's just a text editor I use VS Code and I find it pretty good considering it's free @Ninos122, if you're a student you could be eligible for clion discount/free license, it is really good too

For me any editor especially suitable to code in, meaning you can have syntax highlighting and a shortcut to run your code is an ide 😅

Vim is as much of a IDE as Atom or Sublime Text

That's the definition of a text editor. A IDE offers different tools. Between them you can find a text editor (ofc), usually a debugger and building/compiling tools

As said i can't tell them apart

Nwver said it was. But i mean i have that in vim as well through plugins and shortcuts in the configuration, so whats the difference to a "real" ide

everything

Give me one point, just because i feel like arguing ^^

A quick internet research will do 🥲

for your odd and even array, you only accessed it out of bounds odd_num[n] and you only print a single element in the end and not the whole array.

string word = arr[i]; char letters [word.size() + 1]; strcpy(letters, word.c_str()); Arr is an array of strings.. Can't we just pass word to strcpy..why c_str

c_str() returns a raw pointer of string ,(class string is polymorphic wrapper on classic C style string) Strcopy works with POINTER to real string, if you pass it just word without converting to C style string , then strcopy won't get all array of letters, only some reference to object String

What do you mean some references

I meant if you pass to strcopy object of string, you will pass it reference to the OBJECT not to the pointer to the string which this object contains

String is class which has many functions and POINTER, this pointer is filled when you call constructor (string word ="word"), So here we go, strcopy GETS pointer to array of letters (classic C style string, const char* arr), AND when we pass our STRING object to strcopy, we actually try to give it reference to the OBJECT of string, we dont give it real string, where stored real array of chars, so it won't work. And there , to make it work, we need to call function c_str() of STRING OBJECT, to return this raw pointer which points to real array of chars to make strcopy see what he must work with.

Plz let me know if I understood it properly....when you pass a string it is not instantiated ..hence there is no pointer(so no pointer is passed)..which is why I need to convert it into c_str

Yes, exactly, when you pass object of string, your strcopy doesn't know that string contains some pointer to array of letters, so you need to call c_str() to return this pointer to strcopy

string word = arr[i]; char letters [word.size() + 1]; strcpy(letters, word.c_str()); Arr is an array of strings.. Can't we just pass word to strcpy..why c_str

You assign the pointer inside of WORD object with some value of arr[i] (no matter is there 1 symbol or more ,it's still string), Then you create C style array with size of your string(probably its gonna be 2) And after that all, you want to assign your C style string, with value of string object. So you call strcopy, first parameter is an array where value will be pasted, and second parameter is COPIED element. Two of these parameters must be C styles strings(pointers to arrays of letters) as first parameter you passed C styled string *letters*, so there s no need to convert, AND as second parameter you pass an OBJECT of string which contains real pointer to an arr of letters, but strcopy doesn't know it beforehand, so you call c_str() to say strcopy : "Hey bro, im object, but look, I have a pointer for you which points to the array you need, take it"

Thanks ..it's clear now

Hi Anyone have done something in C++ detour/ function hookings?

did you take a look at the guided hacking tutorial series on it :p ?

ah i see. I'm not sure if i can help there, i did very little on android solely for windows and linux i did any game hacking. On android i really only did some packet analysis and regular development

c++ program to find square root of integer/float type value without inbuilt function

You can find in Google

Please urgent

This is my project's CMakeLists.txt: CMake # Almost all CMake files should start with this # You should always specify a range with the newest # and oldest tested versions of CMake. This will ensure # you pick up the best policies. cmake_minimum_required(VERSION 3.1) set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address") set (CMAKE_LINKER_FLAGS_DEBUG "${CMAKE_LINKER_FLAGS_DEBUG} -fno-omit-frame-pointer -fsanitize=address") project(threads VERSION 1.0 LANGUAGES C CXX) add_library(uthreads uthreads.h uthreads.cpp thread.h Thread.cpp Scheduler.h Scheduler.cpp uthread_exception.h uthread_exception.cpp uthread_utilities.h uthread_utilities.cpp) set_property(TARGET uthreads PROPERTY CXX_STANDARD 11) target_compile_options(uthreads PUBLIC -Wall -Wextra -DNDEBUG -pedantic -g) add_subdirectory(tests) set(CMAKE_EXPORT_COMPILE_COMMANDS ON) Using CLion IDE, I'm getting into a source file in the path: tests/tests_to_be_ran_separately.cpp, and for some reason, it suddenly doesn't recognize any other file of the project, like uthreads.h. When I'm trying to navigate to some function definition from this source file, it says: cannot find declaration to go to. Does someone have an idea as for why it happens?

in google they use inbuilt function

I am not sure I understand the context clearly. What has your CMake file got to do with IDE not able to search for source code? I am not sure the IDE uses the CMake file to decide where the source code is located (not sure about CLion though). It is used mostly by the build generator and the build tools. This error would probably be resolved by your IDE settings/preferences flags/options.

How does the IDE navigate to included files?

Through some specific setting for your project which would specify the include directories.