Recent questions tagged C++

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c++ - Redirect IO of process to Windows socket

I am new to winsock, I tried to write a server socket that accepts new connection, then it calls an external executable ... ! "); return 0; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - int main(int argc, char *argv[])

If I have this: int main(int argc, char *argv[]) In the body, you can sometimes find programs using ... second argument in the command line? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Reading line of integers into a vector

Please have a look at the following code int main() { cout << "Enter numbers (-1 to stop entering; -2 to exit ... (exit value 2, total time: 1s) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - "typename" and "template" keywords: are they really necessary?

There are a lot of questions at this site with the problems while compiling c++ template code. One of the most ... C++ standard says about this. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to manage endianess of double from network

I have a BIG problem with the answer to this question Swap bits in c++ for a double Yet, this question is ... that I query over the network) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - IPC Between Python and Win32 on Windows OS

I have two C application that can communicate via win32 IPC APIs (CreateFileMapping() etc.) I have to ... on Windows Machine. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Grab Program's Console Output

I am creating a network administration program for a company I'm currently doing some contract work with ... communication between programs? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Partition of an Integer + Number of partitions

A partition of an integer n is a way of writing n as a sum of positive integers. For example, for n=7, ... value should be entered by the user. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - how can I make a mex function printf while it's running?

I have a mex file called in my MATLAB script. The mex function may take a while to run, so in order to prevent ... printf at the time I want it. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to read 4GB file on 32bit system

In my case I have different files lets assume that I have >4GB file with data. I want to read that file ... just process each line. Thanks, Bart See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - dynamically allocating 3d array

I'm a little confused about dynamically allocating a 3d array. Right now, I'm just allocating one big block ... dynamically allocate a 3D array? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Replacement for <conio.h> in Linux

I need to transfer a windows C++ project to linux, however I am currently using MS <conio.h> which is not ... the answer is cross platform too. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - restrict a template function, to only allow certain types

Here say I have a simple template function that in principle can accept all kind of types: template <class Type> ... in standard c++ library. } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - CUDA Device To Device transfer expensive

I have written some code to try to swap quadrants of a 2D matrix for FFT purposes, that is stored in a flat ... was about 2x slower. Any ideas? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Class declaration in same scope as using declaration compiles in GCC but not MSVS

Is the following program well-formed according to the c++ standard? namespace X { class A; } namespace ... I tested behave differently. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to deactivate input statement after some time?

We know input function or operator (cin, scanf,gets .etc) wait to take input form user & this time has no ... codebolck 12.11 in windows 7. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Are there any way to link my program with Wine-compiled part?

I am trying to use windows dll functionality in Linux. My current solution is a compilation of a separate wine ... ? Are there any manual? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - 10038 socket error

Is there any solution for 10038 server error .i have done coding in c++; the server runs fine 10 to 12 ... sudenly it gives 10038 socket error See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - When should this-> be used?

I was wondering if this-> should be used both: void SomeClass::someFunc(int powder) { this->powder = powder ... = enabled would suffice. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Complex circular dependency

what is the the best practice of solving circular dependency in C++? I could use the forward declaration, but ... just to be theoretical. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - generate random 64 bit integer

I need your help and please give me some advice. From programming pearls I know that to generate random 30 ... takes to accomplish the task) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How do you build a debug .exe (MSVCRTD.lib) against a release built lib (MSVCRT.lib)?

I'm using Visual C++ 2008, SP1. I have a QT app (gui, .exe) in debug build config. It's set to ... () Line 403 C kernel32.dll!7c817067() See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How do I send long PUT data in libcurl without using file pointers?

I'm trying to interface with the Google Contact API, and in order to update a contact on the remote side, I ... I need to implement? Thank you. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Reading data from file into array

I am trying to read specific data from a file into two 2D arrays. The first line of data defines the size ... } Thanks for the input everyone. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Subclass casting, and pointer address changes

I've been using multiple inheritance in c++ for quite a long time, but only realised today that this could ... classB's address from ClassA. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Pass and call a member function (boost::bind / boost::function?)

I have a probably embarassingly simple problem: pass and call a member function in a class. I know I want to use ... really help me there. B. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How is dynamic_cast typically implemented?

Is the type check a mere integer comparison? Or would it make sense to have a GetTypeId virtual function ... of relying on dynamic_cast. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Unable to pass std::wstring across DLL

I've set up a project in Visual Studio 2010 to write unit tests against an existing MFC DLL. I'm using a ... wstring can't copy across the DLL? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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