<dd id="yld2g"><track id="yld2g"></track></dd>

    1. <th id="yld2g"></th>

      Questions tagged [c++]

      C++ is a general-purpose programming language. It was originally designed as an extension to C and has a similar syntax, but it is now a completely different language. Use this tag for questions about code (to be) compiled with a C++ compiler. Use a version-specific tag for questions related to a specific standard revision [C++11], [C++14], [C++17], [C++20] or [C++23], etc.

      Filter by
      Sorted by
      Tagged with
      1
      vote
      0answers
      10 views

      Running Code during Dialog initialization, after GUI is drawn

      I'm writing an application that communicates and initializes instruments (via COM ports) during the initialization phase of a Dialog (using MFC, on Windows 10). The instrument initialization is ...
      0
      votes
      0answers
      6 views

      When can a BluetoothLE operation prompt for consent on Windows 10?

      I developed a command-line program that connects to a BLE device (a motion sensor), subscribes to motion notifications, then prints the coordinates to stdout around 60 times per second. The data is ...
      -2
      votes
      1answer
      26 views

      accessing a member of a child object when it is in a base vector [duplicate]

      Im currrently having issues accessing a member of a child object when it is in a base vector, I know it is an object slicing issue, im trying to use dynamic casting but im a beginner and am not really ...
      -1
      votes
      1answer
      26 views

      Array to Pointer in C++ [duplicate]

      Why is the following code correct: double balance[5] = {1000.0, 2.0, 3.4, 17.0, 50.0}; double *p = balance; And why is this one not correct: double *p = {1000.0, 2.0, 3.4, 17.0, 50.0}; Can someone ...
      -3
      votes
      0answers
      19 views

      C++: Return a reference to a dynamic string created with new. Will it cause a memory leak? [duplicate]

      Will this cause a memory leak: inline std::string & foo(int x) { auto rstr = new std::string("UNK("+ std::to_string(x) + ")"); return *rstr; } Does the calling function ...
      1
      vote
      1answer
      27 views

      Is there something faster than a min heap for my use case?

      My use case is as follows: I need to get the minimum of a set of growing elements; I'll only need the minimum for any iteration I will update the minimum value after which it is guaranteed to no ...
      -1
      votes
      1answer
      23 views

      How do I make multiple if statements inside one another taking user input in C++?

      so I am new to programming, especially with C++ and I am trying to write a bank program, where I am currently trying to make the person an "account" asking them if they want to make a Basic, ...
      0
      votes
      0answers
      18 views

      C++ How to stop private member variables constructor being called. It supposed to reference another object [duplicate]

      I'm new to C++ and not an experienced programmer. I have a class which contains a member variable of another class I have created. I want this variable to be passed through by the user in the ...
      -2
      votes
      0answers
      16 views

      Linker warning bad type for variable c cpp namespace issue

      Iam facing a linker warning for an example code.. Cpp code: 1.h namespace xx{ struct yy{ float pp[50]; };} // End of namespace 1.cpp #include "1.h" { using namespace xx; struct yy getpp; ...
      -3
      votes
      0answers
      14 views

      Why does the number 0 works on XOpenDisplay and a const char * with “0” doesn't?

      My code is this the problem i'm having is that if i change the variable on the call of the function XOpenDisplay(0) from 0 to XOpenDisplay(nome) that has the "0" inside of it, it just doesn'...
      1
      vote
      3answers
      55 views

      Is constexpr the new inline?

      To the best of my knowledge, the inline keyword in c++ can be traced back to old compilers (then known as "optimizing compilers") not being able to optimize as well as modern ones, so ...
      -3
      votes
      0answers
      21 views

      c++: Declaration of an array inside a typedef struct and just by itself gives different results/errors [closed]

      I transferred parts of code that gets uploaded to an Arduino to a new project in VS Code to only test out a function. Now after transfer I have problems with a big array containing Intel Hex code. ...
      0
      votes
      1answer
      50 views

      C++ avoid dynamic memory allocation

      Imagine I have some Node struct that contains pointers to the left and right children and some data: struct Node { int data; Node *left; Node *right; }; Now I want to do some state space search,...
      -1
      votes
      1answer
      18 views

      Polymorphism C++: Passing child object by value to function that accepts parrent object

      I am passing a child object by value to a function that accepts a parent object. I did not expected to work because I thought that polymorphism involving upcasting applied only for pointers/references....
      -3
      votes
      0answers
      25 views

      error: 'SocketIO' does not name a type; did you mean 'socket35'? | SocketIO *sc; [closed]

      I have some issue with my program. I wrote a class called SocketIO that inherits from abstract class DefaultIO. When I try to initialize a command class that I wrote, it says error: 'SocketIO' does ...

      15 30 50 per page
      1
      2 3 4 5
      47266
      欧美日韩国产在线一区二区_午夜短视频在线观看_亚洲国产欧美日本视频_亚洲精品高清视频在线观看