Linked Questions

The following code works fine, but why is this correct code? Why is the "c_str()" pointer of the temporary returned by foo() valid? I thought, that this temporary is already destroyed when bar() is ...

For Code: stringstream ss("012345678901234567890123456789012345678901234567890123456789"); some articles said it is wrong for followed usage due to ss.str return temp object and will destructered ...

I have checkd gcc and clang and both does not generate any warnings. I suppose that lifetime of temporary from foo() will be prolonged untill the end of full expression which is where semicolon in bar ...

Consider the following code, based on this answer: #include <iostream> #include <sstream> class StringBuilder { public: template <typename T> inline StringBuilder &operator&...

I'm assuming this is undefined behavior, but I'm not exactly sure why? When I compile the above code with g++ 4.4.7 and execute it: #include <iostream> #include <string> using namespace ...

My understanding is that string is a member of the std namespace, so why does the following occur? #include <iostream> int main() { using namespace std; string myString = "Press ENTER ...

Consider the MWE below, std::string return_string() { return "this is a string" } int main() { const char *y = return_string().c_str(); std::string str = return_string(); const char *...

I'm working on a software using a home-made report library which takes only (const char *) type as an argument : ReportInfo(const char* information); ReportError(const char* error); [...] As I'm ...

Consider this MCVE: #include <boost/program_options.hpp> #include <iostream> #include <map> namespace po = boost::program_options; using namespace std; po::options_description ...

I came across some funny memory behavior working with numpy + cython, while trying to get data from a numpy array as a C array, to use in a GIL-free function. I've taken look at both the cython and ...

I'm trying to display a simple message within my first MFC application. Strangely, the first sample doesn't work, instead the second one works correctly. auto text = std::to_wstring(1).c_str(); ...

I was getting intermittently weird results with running stat() (perror(): "Bad address") on a filename that comes from a commandline argument in my project: // mz.h class MzImage { private: ...

I have a C++ function that is supposed to repeat a string a certain amount of times. What I've seen is that when the resulting string is more than 15 characters long, the function does not return ...

So I want to do something like printf("%s", '\t'*3); Im just wondering if there is a way to print something like that without looping

I'm extracting text from a PDF using Poppler and used the following code to print the text: for (std::vector<poppler::text_box>::iterator it = currpg.begin(); it != currpg.end(); ++it) { ...