Category "c++"

Changing a defined constant in a dll compilated file from external application

Please, help me to figure out this. I have the following code in C (example): #define cutoff 22; double age; if (age == cutoff) { cout << "Good morning

What is atltime.h in MFC

Can someone will explain to me What is atltime.h ? I don't know how this header works. I tried to search it on google but i didn't get an answer of what atltime

How to know when a char* library function arg needs an array it can modify, not a char pointer

I am new to C programming. and I know char * and char[] array are different. Yet, you can deduct the char[] to char * when it comes to a function param. So func

Trouble extracting numbers from helib::Ctxt ciphertext

I'd like to access directly to the numbers composing the ciphertext Ctxt from HElib, but reading the documentation I don't seem to find anything that can help m

Detected memory leaks in shared_ptr copy constructor

All the code is included in this post. For some reason, it tells me that, a memory leak is happening at shared_ptr.hpp(60), assuming this must be line 60 here.

Fastest way to draw filled quad/triangle with the SDL2 renderer?

I have a game written using SDL2, and the SDL2 renderer (hardware accelerated) for drawing. Is there a trick to draw filled quads or triangles? At the moment I'

The term 'g++' is not recognized as the name of a cmdlet, function, script file, or operable program [closed]

Could you guys tell me why a simple c++ file can't work and gives me errors in the terminal.Is it a simple error? Thank you.The photo is on th

How to get std array size in a constant expression?

Consider this code: #include <array> #include <cstddef> struct A { std::array<std::size_t, 4> test; void method() { std::size

is it safe to use boost::asio::streambuf as both an istream and an array as string_view?

For example, could there be problems with the memory work inside this buffer if I use code like this? Can I use the input stream and use sv (string_view) with t

Convert float pointer returned by c++ DLL function to float C#

extern The return is a pointer to the internal array containing results info. It should not be modified results values are output as a float array (mantissa

building a nested JSON

Some data files that I need to read / parse have headers in the style: level0var = value0 level0var.level1field = value1 level0var.level1array[11].level2field

Using Qt+ICC on Windows

I have a question about the use of the Intel C++ compiler on Windows for compiling Qt projects. I know that officially ICC is supported only by Qt on UNIX, but

Template partial ordering - why does partial deduction succeed here

Consider the following simple (to the extent that template questions ever are) example: #include <iostream> template <typename T> struct identity;

What will be the time complexity of this brute force apporach of finding largest valid bst in a binary tree?

int size(Node* root){ if (root == nullptr) { return 0; } return size(root->left) + 1 + size(root->right); } bool isBST(Node* node

How to know the name of a library installed with vcpkg?

In my simple app which I build with cmake I use opencv, which is installed with vcpkg. On CMakeLists.txt I have to find_package(OpenCV REQUIRED), replacing Open

Using 3rd party lib file in NodeJs and getting LNK2001 error

I have been searching for an answer for a while and couldn't find anything that worked. Here is some background: I am trying to build an electron app that can u

How to create custom tensor value with shape (b,n,m)?

How to create custom tensor value with shape (b,n,m) I see the cppflow::fill method but it allows inserting 1 value which fills the whole same value in the shap

How to load printf from UCRT DLLs?

I am trying to dynamically load printf from ucrtbase.dll, but GetProcAddress is returning NULL. Other functions like malloc and puts work, but not printf. int m

weird visual studio to linux results

I have this project where we have to convert a made up simple coding language given through a txt into a c++ language and currently I am having a problem with c

How to get characters from a file and display on console?

I got this code from notes about file handling. From what I understand about this code, I want to get characters till x is reached in the file using this code.