Could you please look at this lines of code taken from the cpp reference and translate them for me, explaining them line by line? #include <iostream> #include <type_traits> struct A { // non-POD type int avg; A (int a, int b) : avg((a+b)/2) {} }; typedef std::aligned_storage<sizeof(A),alignof(A)>::type A_pod; int main() { A_pod a,b; new (&a) ..
Category : c++11
I’m trying to launch the program code for Travelling Salesman Problem (TSP) with Genetic algorithm. Couldn’t figure out in a code as it’s not mine. Can anyone understand how to fix it? I need to define the global object in the code and place it in a right place How can I define it in ..
I try to run my project in vscode but got "warning: ‘auto’ type specifier is a C++11 extension [-Wc++11-extensions]". I did change the C++ extension in VSCode to c++11, my tasks.json is also states "-std=c++17", but still got that warning. Any ideas? I have browsed Stackoverflow for two days to fix it but still hopeless. ..
Question:- https://leetcode.com/problems/intersection-of-two-arrays/ This is my code:- class Solution { public: vector<int> intersection(vector<int>& nums1, vector<int>& nums2) { vector <int> result; for(int i=0;i<nums1.size(); i++){ for(int j=0;j<nums2.size();j++){ if(nums1[i] == nums2[j]){ result.push_back(nums1[i]); break; } } } for(int i=0;i<result.size();i++){ for(int j=0;j<result.size();j++){ if(result[i] == result[j] and i!=j){ result.pop_back(); } } } return result; } }; I am getting wrong output for ..
We have a legacy class used in production something like below to handle UI events: //.H file class A { public: static IntPtr DD_STDCALL DispatchMsg(HWND hwnd, UInt umsg, WPARAM wparam, LPARAM lparam); ..other members… }; //.CPP file IntPtr DD_STDCALL A::DispatchMsg(HWND hwnd, UInt umsg, WPARAM wparam, LPARAM lparam) { …. } Now actually I want to ..
I’m trying to convert the bytes in to string correctly. But the converted string looks like a garbage. I have the following code: #include <iostream> #include <sstream> #include <vector> std::string HexString( std::vector<std::uint8_t> &bytes ) { std::stringstream ss; for ( std::int32_t i = 0; i < bytes.size(); i++ ) { if(i != 0) ss << ","; ..
I am learning cpp and I am creating a Vector class using templates, namespaces, header files… . Now this is my code so far main.cpp #include "my_vector.h" #include <string> #include <iostream> int main(){ MY::Vector<int> vector; } my_vector.cpp #include "my_vector.h" #include <string> #include <iostream> // implementation of all the constructors template <class T> MY::Vector<T>::Vector(){ size = ..
Consider the store buffer litmus test with SC atomics: // Initial std::atomic<int> x(0), y(0); // Thread 1 // Thread 2 x.store(1); y.store(1); auto r1 = y.load(); auto r2 = x.load(); Can this program end with both r1 and r2 being zero? I can’t see how this result is forbidden by the description about memory_order_seq_cst in ..
I use QTableView and want input date. How i can validate or use date dialog? I not found delegators for make it. Source: Windows Que..
I need to have the generated cell(s) to be stored in a vector I created. The push_back function would not let me run the code and states that there is no instance of overloaded function and it only shows the error when I put in the class enum inactive (if I remove it, there is ..
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