C++ - Страница 1250

This is about how to convert a 3d model to a polycube structure. This paper already provides some parts of code,but I can't get the right answer.

I have get the result like this: enter image description here but i expect all the plane should be...

my code is currently displaying voltage, temperature, and current readings worth 0 on the arduino serial monitor. whereas last month the same code could display complete values. but now the values displayed are as follows

16:29:00.356 -> { ID :1,...

I've attempted to make a 2D collision simulator with variable squares that should run into each other. My code is able to work in one dimension in both the x and y axis or with one square going in the x axis and one square going in the y axis....

I have a (very) legacy c++ program that uses a character array, and then subsequently concatenates to the variable.

char FileName ; strcat(FileName, /home/ ); Despite not being initialized (this is not static or anything, just within a function...

Why am I getting the following linker error when using clang with libc++:

$ clang++ -stdlib=libc++ po.cxx -lpoppler /tmp/po-QqlXGY.o: In function `main': po.cxx:(.text+0x33): undefined reference to `Dict::lookup(char*, Object*, std::__1::set*)'...

I've been learning C++ and using the Terminal for the last couple of months. My code was compiling and running fine using g++ and C++11, but in the last couple of days it started giving errors and I have had problems compiling since. The only...

I'm working on a program for a class. The prompt is Write a program that asks the user their name and the diameter or the pizza they want, calculate the area of the pizza using PI to four decimal places (3.1415) but show the area of their Pizza to...

I am trying to include Boost Libraries in my C++ script after installing it, but I am getting the following error message by the intellisense:

#include

'boost/iterator/counting_iterator.hpp' file not found clang(pp_file_not_found) I have...

I need help with the following problem:

The goal is to create a torus from its parametric equation.

x(θ,φ) = (R + rcosθ) cos φ

y(θ,φ) = (R + rcosθ) sin φ

z(θ,φ) = rsinθ

With the above equation it is straightforward to generate triangles...

I'm reading a C++ function that handles timestamps, and there's an expression like this:

t % (60 * 60) % 60 I thought this expression was strictly equivalent to:

t % 60 However, when I entered this code into I found that gcc did not think so....

I'm using Xcode 14.3 on macOS 13.3.1

When I try to launch my project with Instruments for Profiling, it is launching an arbitrary copy of a bundle with the same bundle ID.

As this project has been in active development for sometime, I have the...

I have been developing a calculator from scratch.

I have gotten to the part where i need to render numbers/symbols on the buttons and displaying them but I realize I need SDL_TTF for that, which I do not have when I downloaded SDL2

I downloaded...

void MyGraphcisItem::updateChildItems() { QList items = this->childItems(); **updateChildItems(); } } QList items = this->childItems(); It takes too long. The more items there are, the longer it takes. Is there a way to avoid it? Actually, I wonder...

I'm writing C++14 code which needs to deserialize objects as fast as possible.

The serialization is in memory and occurs in the same process as the deserialization.

Consider this:

struct Base { Base(const int a) : a {a} { } int a; }; struct...

there is a code as below in the version 2.6.24 of kernel:

unsigned int __kfifo_put(struct kfifo *fifo, unsigned char *buffer, unsigned int len) { unsigned int l; len = min(len, fifo->size - fifo->in + fifo->out); /* * Ensure that we sample the...

I have a executable of C++ Qt project and I want to assign a checksum to it for documentation purpose so that I add can details like

Software Version : 1.5

Checksum : 0xBd3429A

The checksum should change whenever i update my project like...

Given a range of ints, I want to get all subranges where b - a

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As i said before i get an error when i run VimspectorInstall vscode-cpptools In the Screenshoot 1 I don't understand why python can't run these files and I don't know where to start. When I enter the checkhealth command I get the following.In the...

I am trying to specialize a templated function with a functional argument, but the compiler is unable to infer the proper specialization. I get compiler errors unless I am explicit about the function type.

#include int data; using MyFunction =...

I was playing with this code to check if an integer is a power of 4:

// C++ version bool is_pow_4(unsigned a) { return (std::popcount(a) == 1) && (std::countr_zero(a) % 2 == 0); } // C version int is_pow_4(unsigned a) { return...

Context:
We've recently upgraded from gtk2 to gtk3 and for this had to get rid of GtkGLExt as our OpenGL context as it does not support gtk3. Doing so we've decided to use wglContext and setting the render context ourself. We develop a heavily...

I'm reading a C++ function that handles timestamps, and there's an expression like this:

t % (60 * 60) % 60 I thought this expression was strictly equivalent to:

t % 60 However, when I entered this code into godbolt.org, I found that gcc did not...

I was wondering that if we run multiple calls of async_resolve than in practice the io_context doesn't run more than one request at the time due to a known limitation.

Here's a sample example where I'd expect that each resolve request will yield...

I am currently facing a problem of the HANDLE returns NULL from network located printers.

//NOTE:szDriver is the driver location //my device name = \\somelocation\HP Color LaserJet CP3505 PCL 6 , HANDLE hDC; hDC =...

Whenever I see examples of union, they are always different types. For example, from MSDN:

// declaring_a_union.cpp union DATATYPE // Declare union type { char ch; int i; long l; float f; double d; } var1; // Optional declaration of union variable...