The comparison in the assignment operator works as expected, but when I try to use a temp variable and load then return that, all it returns is the defaults. De
The C++11 Standard (ISO/IEC 14882:2011) says in § C.1.1: char* p = "abc"; // valid in C, invalid in C++ For the C++ it's OK as a pointer to a String Lit
following is my code. Eigen::Matrix3d first_rotation = firstPoint.q.matrix(); Eigen::Vector3d first_trans= firstPoint.t; for(auto &iter:in_point
C++11 mandates that static variables inside a function are atomically initialized for the first run of the function. The only way to do that efficiently is doub
SPIGtestMain.cpp #include "gtest/gtest.h" #include "gmock/gmock.h" TEST_F(GivenANewSPI,WhenDemoIsCalled_TheComponentGetsVal) { unsigned char const *Ptr;
I think the 8th constructor of the std::shared_ptr<T> should be decalared as template< class T, class Y > shared_ptr<T>( const shared_ptr<Y
I want to transfer json data into request of json boost in cpp. If i take json in boost int outer=2; value data = { {"dia",outer}, {"sleep_tim
I am trying to initialise an std::vector<std::unique_ptr<std::string>> in a way that is equivalent to an example from Bjarne Stroustrup's C++11 FAQ:
Brace initialization struct A { int a; int b; void foo(){} }; A a{1, 2}; It works fine. Bu
for example: if the user enters : ( 23+22+43) I want the function to do exactly the following : for(int i =0; i <strlen(x);i ++) { if (x[i]=='+') {
I tried to draw the menu background in MFC Dlg App. But I found if I declare CMenu subMenu in OnInitDialog(), the background color works well. If I declare C
For POD structure, could new Demo_Class[CONST_NUMBER]() guarantee the dynamically allocated structures are well initialised(i.e. not garbage) in C++11 and after
I want to finish a program which can find a string in a file and then output a char 'T' in the end of line which the string exists . And my code like below(in t
Why does string not work here when I catch an error, and char const* does? What is the difference between the two? try { throw "connection fail"; } catch(
I am using Vscode to compile my c++ programs. I have a program in which auto keyword is used. However when I compile it gives me the error. I have installed c++
Is there some c++ proposal for Integer literal for fixed width integer types like this? // i's type is unsigned int auto i = 10u; // j's type is uint32_t auto j
Is there some c++ proposal for Integer literal for fixed width integer types like this? // i's type is unsigned int auto i = 10u; // j's type is uint32_t auto j
I try to implement an asynchronous MQTT client with the paho library, that receives messages on topic "request", formulates a string and puts the response out o
In order to make two objects, User1 and User2, of a class User sending and receiving messages, #include <iostream> using namespace std; class reply { p
Trying to insert values of square and cube of a number in set st and st1. (Let n = 10^7). After printing, set st is having negative values due to limit of integ