Category "c++"

POST form data using WinInet c++

I'm trying to make this program connect to a website and submit form data in order to login, but I don't know what I'm doing wrong. I have heard of others like

Unable to link libclang with cmake on VS2017

A while ago I wrote a code generation program to use in my 3D game engine. I added a target to my cmake files, linked libclang with it as I'm using that for par

Count the number of occurrences of each letter in a string

This is my logic. I wrote function for counting the no. of occurrences of each letter in a string. But this doesn't work correctly. Correct me. void countChar(c

Count the number of occurrences of each letter in a string

This is my logic. I wrote function for counting the no. of occurrences of each letter in a string. But this doesn't work correctly. Correct me. void countChar(c

launch an exe/process with stdin stdout and stderr?

With C++ how do i launch an exe/process with stdin stdout and stderr? I know how to do this in .NET and i remember using popen in the past but popen seems to al

How to use an operator from a specific base class on multiple inheritance context on C++

I'm writing some C++ codes, and I can't compile the following code on g++. It only says that std::string hasn't a method named "operator==". I know it's not tru

What is the fastest way to check if any files in a directory tree have changed?

Currently I'm checking against an XOR Checksum of the modified file time (st_mtime from fstat) for every file in the tree. I'm coupling this with the number of

What is the fastest way to check if any files in a directory tree have changed?

Currently I'm checking against an XOR Checksum of the modified file time (st_mtime from fstat) for every file in the tree. I'm coupling this with the number of

Use of a functor on for_each

Why does the for_each call on functor doesn't update sum::total at the end? struct sum { sum():total(0){}; int total; void operator()(int element)

Sum of two chars in C/C++

In C/C++ when I want to find sum of two chars - I get result in int. For example: #include <stdio.h> int main(){ char a = 'a', b = 'b'; printf("%d

Inheritance of copy constructors in C++17

Consider the following example: struct Parent { Parent (); Parent (const Parent &); }; struct Child : public Parent { using Parent::Parent; }

Is there any method to abort cin or scanf

I have a multithreaded program in which on thread waits for input through a terminal and the other will get data from the socket. Is there any way to abort firs

Would float point format be affected by big-endian and little endian?

I know the integer format would be different between big-endian machine and little-endian machine, is it the same for float point format (IEEE 754)?

Error message "error: stray '\302' in program"

I'm using Code::Blocks on Ubuntu 10.10 (Maverick Meerkat). I have connected a Mac keyboard and set the keyboard settings to "Swiss German Mac". Now wheneve

How to disassemble a binary executable in Linux to get the assembly code?

I was told to use a disassembler. Does gcc have anything built in? What is the easiest way to do this?

Putting C++ string in HTML code to show value on webserver

I've set up a webserver running on ESP8266 thats currently hosting 7 sites. The sites is written in plain HTML in each diffrent tab in the arduino ide. I have i

Kcachegrind cycle estimation

After going to their github page and seeing some pdf manual form their kde docs site, I am still confused. Suppose there are these two lines in a test code: do

Why should I always enable compiler warnings?

I often hear that when compiling C and C++ programs I should "always enable compiler warnings". Why is this necessary? How do I do that? Sometimes I also hear

Performance of built-in types : char vs short vs int vs. float vs. double

Seeing Alexandre C's reply in the other topic, I'm curious to know that if there is any performance difference with the built-in types: char vs short vs int vs

Where do calendar messages in PST files store appointment times and dates?

I am using the PST File Format SDK to try and extract some appointment item data from an Outlook PST export: int main() { pst myfile(L"export.pst"); fo