C++11

Great Reads

Succinct Guide to Floating Point Format For C++ and C# Programmers

by Shao Voon Wong

Floating Point Format For C++ and C# Programmers

tlock: Any C++ Object read/write Thread-safe Provider

by Michael Chourdakis

An easy locking class for shared/exclusive mutex functions with upgrade/downgrade

Functional Programming in C++

by MehreenTahir

This article will show you an alternative way of using C++; How to write functional code in C++. You’ll see how to write more concise, safer, readable, reasonable code.

CppEvent - How to Implement Events using Standard C++

by Shmuel Zang

This article shows how we can implement a thread-safe events (similar to .NET events) mechanism using the standard C++ library.

Latest Articles

Tile Grid Control

by PJ Arends

An MFC CWnd derived grid of user definable tiles

Bring Your Animations to H264/HEVC Video

by Shao Voon Wong

Bring your animations to H264/HEVC video using C++ and C# with h/w acceleration

Enable C++11 multithreading in GCC for FreeRTOS

by Piotr Grygorczuk

Enable C++11 multithreading features in GCC for FreeRTOS

H264/HEVC Video Encoder for OpenGL

by Shao Voon Wong

H264/HEVC Video Encoder for recording OpenGL rendering

All Articles

top

C++11

Succinct Guide to Floating Point Format For C++ and C# Programmers

12 Jan 2020 by Shao Voon Wong

Floating Point Format For C++ and C# Programmers

C++11

C++

tlock<>: Any C++ Object read/write Thread-safe Provider

13 Jul 2019 by Michael Chourdakis

An easy locking class for shared/exclusive mutex functions with upgrade/downgrade

C++11

C++

Win32

Functional Programming in C++

23 Nov 2018 by MehreenTahir

This article will show you an alternative way of using C++; How to write functional code in C++. You’ll see how to write more concise, safer, readable, reasonable code.

CppEvent - How to Implement Events using Standard C++

13 Aug 2018 by Shmuel Zang

This article shows how we can implement a thread-safe events (similar to .NET events) mechanism using the standard C++ library.

Enable C++11 multithreading in GCC for FreeRTOS

30 Mar 2023 by Piotr Grygorczuk

Enable C++11 multithreading features in GCC for FreeRTOS

C++11

C++

multi-threading

Some Shocking Facts You Probably Didn't Want to Know about U++ Framework...

12 Nov 2020 by Miroslav Fidler

...but I will tell you anyway.

C++11

C++

U++

H264/HEVC Video Encoder for OpenGL

26 Oct 2022 by Shao Voon Wong

H264/HEVC Video Encoder for recording OpenGL rendering

C++11

C++

OpenGL

Designing Efficient Thread-Safe Reference Counting System

29 Jun 2017 by EgorYusov

This article describes an efficient thread-safe reference counting system.

Weiler-Atherton Algorithm in MFC

25 Feb 2018 by Petrov Vladimir

Weiler-Atherton algorithm in MFC codes demo implementation

Singular Values Decomposition (SVD) in C++11 by an Example

30 Dec 2018 by Arthur V. Ratz

SVD in C++11 explained with an example

PolyHook 2: C++17 x86/x64 Hooking Library

24 Jul 2018 by stevemk14ebr

PolyHook v2 - the C++17 x86/x64 library supporting multiple methods of hooking

Constants and Constant Expressions in C++11

11 Jul 2012 by Mikhail Semenov

keywords: constexpr, constant, constant expression, user-defined literals, GCC 4.7.0

C++11

C++

C++ State Machine with Asynchronous Multicast Delegates

23 Oct 2019 by David Lafreniere

A framework combining state machines with asynchronous multicast delegates

Variadic Delegates

13 Apr 2015 by Anton Chibisov

This tutorial showcases how to implement C++ delegates which are capable of being bound to methods and functions having arbitrary signature, i.e., any number and type of parameters and return value.

Sharing Objects Between Threads in C++, the Safe and Easy Way

14 Jun 2016 by Noah L

Beware the data race sneak attack.

Metaprogramming in C++: A Gentle Introduction

23 Mar 2021 by honey the codewitch

Make your code more efficient by hacking your compiler to improve its optimization capabilities

Use C++11 Range For-Loop to Enumerate Registry, Folder and WMI

16 Oct 2022 by Shao Voon Wong

C++11 Range For-Loop to Enumerate Registry, Folder and WMI

C++11

C++

Desktop Screen Capture on Windows via Windows Desktop Duplication API with Drawing of Cursor's Image

2 Aug 2016 by Evgeny Pereguda

Simple article about using of Desktop Duplication API for capture desktop screen WITH image of cursor

Vector of Objects vs Vector of Pointers

2 Jun 2014 by Bartlomiej Filipek

How memory access patterns can influence performance of your code

Happy Registry: A Quick Wrapper for the Win32 Database

23 Oct 2015 by Michael Chourdakis

A simple template for manipulating the registry

How a weak_ptr Might Prevent Full Memory Cleanup of Managed Object

30 Jan 2018 by Bartlomiej Filipek

It appears that in some cases memory allocated for the object controlled by smart_ptr might not be released until all weak pointers are also ‘dead’... let's see why

C++11

C++

Rvalue Member Functions and Overloading

10 Jul 2018 by John M. Dlugosz

Did you realize that the `*this` object can be qualified with lvalue vs rvalue? Here’s what you can do with that.

C++11

C++

Tree Container in C++ - n ary Tree - Part 1

26 Mar 2015 by BrainlessLabs.com

This tip describes a n ary tree structure.

C++11: Compile-time Conditional Types

16 May 2018 by Shao Voon Wong

C++11's std::conditional tip with an endian swap example

C++11

C++

VS2013

How is it possibble? Question is " predict the output".

9 Dec 2018 by Richard MacCutchan

Because the sizeof operator returns an unsigned value. So the compiler then treats -1 also as an unsigned value. The hexadecimal value of -1 is 0xFFFFFFFF or unsigned decimal 4294967295, which of course is much greater than the size of an integer (which is 4 (not 8)). One of the pitfalls of...

C++11

XorShift Jump 101, Part 2: Polynomial Arithmetic

24 Apr 2020 by Member 4201813

Jump forward/backward procedures for XorShift RNG explained step by step

A Simple Worker Thread

15 Mar 2016 by Satbir S

A worker thread gives you parallel processing power

DIY µ-range

23 May 2018 by John M. Dlugosz

It is easier than ever to exploit the range-for loop (and make use of std algorithms) for things other than collections.

C++11

C++14

C++

XorShift Jump 101, Part 1: Matrix Multiplication

14 Apr 2020 by Member 4201813

Jump forward/backward procedures for XorShift RNG explained step by step

My Top 5 C++ Proposals for October 2014

25 Oct 2014 by Bartlomiej Filipek

A list of my top 5 interesting C++ proposals.for pre-Urbana mailing. Unified Syntax Call, Coroutines, array_view ranges and modules.

C++14

C++11

Why generated class is identical even after random?

11 Dec 2015 by Sergey Alexandrovich Kryukov

Probably this is because you act in identical way: create the brand new rd and genEngine objects each time you need a random value. You need to create and initialize these objects only once in the whole life cycle of your process. For example, create such objects in main and pass the pointer to...

C++11

vector

random

My program to check for armstrong number is showing 153 as non armstrong number. Please check it out. I am using code block as complier

10 Jun 2018 by Patrice T

Quote: My program to check for armstrong number is showing 153 as non armstrong number. Your problem is that you mix floating point functions and integer arithmetic. Consider than the floating point value of an integer is never exact, thus your problem. pow() is double.

C++11

Can anyone please explain me the output of this C++ pointer code?

14 Oct 2018 by Jon McKee

The reason for that output is something called pointer arithmetic. Arrays are stored sequentially in memory. So the offset from one value to the next is the size of the type. Integer = 4 bytes, float = 4 bytes, double = 8 bytes, etc. This is the fundamental reason why pointer arithmetic works....

C++11

Setting Write Direction and Alignment

4 Jul 2020 by Michael Haephrati

How to set write direction and alignment

C++11

MFC

Graphics, how to write a graphics program on visual studio

5 Jul 2020 by CPallini

You could try to rewrite your program for using GDI+. Have a look at Getting started with GDI+ - Win32 apps | Microsoft Docs[^]

C++11

Fast Memory Allocation and Pooling for Constrained Environments

14 Dec 2020 by honey the codewitch

Some C++ magic to help cut down on heap abuse for simple scenarios

How to return the values from a void function?

29 Jan 2021 by CPallini

Quote: void func(ENUM retCode, std::string name); What's wrong with ENUM func(std::string name); ? If you really need to return a value then return it. As an alternative you could pass an item by reference (see, for instance C++ Functions -...

C++11

C++14

C++

Read the first, and only the first, byte from a file

25 Jul 2022 by OriginalGriff

Quote: My compiler: "error". "error". "error". "[Ha ha ha, another]error". First off, if you get compilation errors, then that is to be expected - but we can't help fix them without seeing the code and the error message(s) any more than a...

C++11

C++

C++ virtual function execute problem

29 Mar 2012 by Sergey Alexandrovich Kryukov

You need to instantiate (construct) an instance of the class using new A(); new B(); actually, as per your code, in both cases it won't work; is is not even related with OPP as you simply try to re-reference NULL.[EDIT]The code actually works as OP described with C++ of VS 2008. Please...

C++11

C++

How do I pause the console for an x amount of seconds

6 Jan 2014 by OriginalGriff

Depending on what environment you are working in.For Native, call Sleep[^] - for CLR applications you want Thread::Sleep[^]But...be aware that it will do just that: pause your console for the time you specify. Nothing else will happen...

C++11

Visual-Studio

C++11 Constructors and Copy Assignment – Part 2

2 Sep 2014 by BrainlessLabs.com

C++11 Constructors and Copy Assignment – Part 2

C++11

C++

Policy Design Pattern and Variadic Template Technique

8 Apr 2015 by Evgeny Pereguda

This article presents simple combination of Policy design pattern and Variadic Template Technique.

C++11

Get Integral Type By Size, Switch By Type ID

18 Sep 2015 by Shvetsov Evgeniy

Type tricks (above described and other)

How Do I Print Multiple Parameters

10 Oct 2015 by CPallini

Quote:The console is only returning the yThat is the correct behaviour of the comma operator (see here[^]).Anyway a C/C++ function returns a single value.However, the single return value could be an object (instance of a class or a struct) and you may define the insertion operator for...

C++11

How do I compile this sourcecode.

10 Oct 2015 by PIEBALDconsult

I didn't find a dir.h file with my installations of Visual Studio.But Borland C/C++ has a dir.h and GCC that comes with MinGW has one.It seems Visual Studio does not have a dir.h :"I think that ANSI C does not have any directory functions, hence no dir.h and no dirent.h in Microtosoft...

C++11

C++14

how do list out the members of the class without knowing a member name directly

29 Oct 2015 by CPallini

Reflection is not supported by C++. You have to write a parser in order to accomplish such a task.

C++11

C++

how do list out the members of the class without knowing a member name directly

29 Oct 2015 by Sergey Alexandrovich Kryukov

Please see Solution 1.One interesting product of this kind can be found in Qt: http://vasc.ri.cmu.edu/media/manuals/qt.2.3.1/moc.html[^].See also http://woboq.com/blog/reflection-in-cpp-and-qt-moc.html[^].—SA

C++11

C++

How Do I extract the pure text from sectors in a hard drive.

21 Nov 2015 by Sergey Alexandrovich Kryukov

This is done using regular Windows API CreateFile:https://msdn.microsoft.com/en-us/library/windows/desktop/aa363858%28v=vs.85%29.aspx[^].Only you need to use appropriate string for a file name representing the disk, "\\.\PhysicalDriveX". See the explanations at the end of this MSDN...

auto keyword with for-loop produced Odd result

3 Jan 2016 by Richard MacCutchan

You are declaring your values as unsigned so when i goes from 0 to -1 it is treated as the unsigned value 0xFFFFFFFF, and the loop goes on forever. If you change the second loop statement tofor (auto i = 2u; i > 0u; --i)// orfor (auto i = 2u; i != 0xFFFFFFFFu; --i)// or better for...

C++11

How should I input a line with numeric and character data in it?

13 Oct 2018 by OriginalGriff

Read it as a string, then - assuming it won't always have a "+" in the middle - process it into a collection of strings: a sequence of numerics becomes a string, a sequence of non-numerics becomes another. In this case you will end up with three strings:"12345" "+" "67890" You can then convert...

C++11

I need help with structs

20 Oct 2018 by Richard MacCutchan

for(i=0; i

C++11

Sqlite insert and read order will always be same?

19 Nov 2018 by OriginalGriff

No, it doesn't have to be. The only way to be sure of an output order is to use an ORDER BY clause and reference a column that provides the order: an IDENTITY column, or a timestamp. As you add and remove rows from yoru DB, it leaves "gaps" in the data, which can be filled later to prevent...

C++11

SQLite

Problem in decoding plantext using HMAC of crypto++

30 Oct 2019 by Richard Deeming

HMAC is a one-way cryptographic hash function. You cannot retrieve the plaintext from the hash. HMAC - Wikipedia[^]

C++11

cryptography

Expected unqualified-id before ' ' token how to resolve this error?

26 Nov 2019 by phil.o

void main(); Please remove that semicolon and see what happens.

C++11

How can I solve these 2 errors when creating thread?

27 Nov 2019 by Shao Voon Wong

Remove the i parameter and &ptrGrabResult std::thread t1([&]() { for (uint32_t i = 0; i GetCameraContext();...

C++11

How to initialize a variable declared as unsigned char*

10 Dec 2019 by Richard MacCutchan

You could start at C++ Language Reference | Microsoft Docs[^]. However, rather basic code but ... unsigned char uchars[5] = { 17, 17, 17, 17, 17 }; unsigned char* uresult = thefunction(uchars);

C++11

Why is this code experiencing an exception on the scanf line

13 Jul 2020 by Peter_in_2780

You need to write scanf ("%g", &input1); to pass the address of your variable to scanf. Elsewhere, you're referencing values, so no & is needed or wanted.

C++11

Why is this code experiencing an exception on the scanf line

13 Jul 2020 by Jon McKee

scanf - C++ Reference[^] Depending on the format string, the function may expect a sequence of additional arguments, each containing a pointer to allocated storage where the interpretation of the extracted characters is stored with the...

C++11

Write a function that returns the sum of multiples of 3 and 5 between 0 and limit (parameter)

7 Aug 2020 by OriginalGriff

It's pretty simple: 1) Create a function which takes an integer parameter called limit 2) Inside the function: 2.1) Create a variable called sum and set it to zero. 2.2) Run a loop from 0 to limit inclusively. 2.3) Inside the loop: 2.3.1) If...

C++11

Python2.7

I wrote this code but d function doesn't work , ِِdo you know what is the problem?

7 Dec 2020 by Richard MacCutchan

Read your code: look at your delete function, it does not do anything. int delete_node( node* head,node* pointer) //delete linked lists that user input { node* NEXT = head; pointer = head; return -1; // any following code will now be ignored.

C++11

C++

In C++11 is there a limit to a vector array size?

20 Feb 2021 by Rick York

That "certain size" should give you a clue to what limit you have run into. A normal 32-bit application* will have a memory access limit of 2GB while a 64-bit app will have an enormous limit. In fact, you can not put enough memory in any...

C++11

Is this class pointer correctly defined in this example?

7 Aug 2021 by Rick York

Yes, that memory needs to be allocated before it is used. A statement like this could be used : wcPt2D* vertRot = new wcPt2D[ nVerts ]; and, of course, it must be released after it is used : delete [] vertRot;

C++11

How to learn CSS coding?

26 Aug 2021 by Richard MacCutchan

CSS Tutorial[^]

C++11

C++ accesing derived member function from base class

17 Oct 2021 by Greg Utas

Define notify as virtual in base and override it in derived1 and derived2: class base { public: virtual void notify() { } } class derived1 : public base { public: void notify() override {...}; } class derived2 : public base { public: void...

C++11

Windows

[Solved] static and non-static init block in C++

31 Dec 2021 by Richard MacCutchan

You could probably simplify that by the use of the singleton pattern - Google Search[^].

[Solved] static and non-static init block in C++

5 Jan 2022 by Stefan_Lang

You seem to try and imprint another languages' properties onto C++, and that is never a good idea! My experience with java is limited, and I'm not sure what you actually have in mind, but the code you posted is clearly not the recommended way of...

Move constructor for pointer object in C++

17 Jan 2024 by Bruno van Dooren

I wrote an article about that. Check it out. Using C++ Move Semantics to Manage Pointers to Externally Allocated Memory[^]

C++11

C++14

C++

c language problem and codes

6 Oct 2011 by killabyte

#include "stdio.h"#define LAZY_CODER 1#define UNAWARE_OF_GOOGLE 1void DoNothingLearnNothing(){ printf("...");}int main(){ while(LAZY_CODER && UNAWARE_OF_GOOGLE) { DoNothingLearnNothing(); } return 0;}

C++11

C++11 (and C++98) Syntax/Grammar as Fully Linked HTML page

12 Feb 2012 by Andreas Gieriet

HTML page with all syntax/grammar productions of C++98/C++11

C++11

C++98

C++

bit level access using C++

13 May 2013 by CPallini

Suppose, for generality:const int N = 500;a = new char[N];char b[N];You access bit bitno of either a or b in the same way (note: not tested):int getbit(int bitno, int x[], int size){ if ( bitno = (size*8) ) { // throw an exception here } int...

C++11

How to create a subclass of thread Class properly

6 Oct 2013 by Richard MacCutchan

You need to carry the public scope attributes forward to your inherited class, thus: class Parallel: public thread {

Huffman Coding and Decoding in c++

24 Dec 2013 by CPallini

In addition to Andreas good suggestion, I wonder if there is any article, here at Code Project, on the argument[^].

C++11

Code not performing intention

6 Jan 2014 by CPallini

In C++ round braces are mandatory in function calls.Change fromQuote: if (test=="yes"){ printmap; } toif (test=="yes"){ printmap();}You should also change fromQuote:string map[6][6];tostring map[7][7];in order to avoid buffer overrun.Finally...

C++11

Visual-Studio

Code not performing intention

6 Jan 2014 by OriginalGriff

You have look at your warnings!You have almost certainly got something like: warning C4551: function call missing argument liston this line: printmap;Beasue you are not executing the method, you are just referring to the method name.Change it to:if (test=="yes"){ ...

C++11

Visual-Studio

Error message in typecasting and dereferencing in c++!

17 Oct 2015 by Andreas Gieriet

How about Google?E.g. see http://www.cplusplus.com/doc/tutorial/typecasting/[^].RegardsAndi

C++11

C++

How to declare a file in c++ ?

4 Nov 2015 by User 59241

You should be using ifstream for input.Read this: http://www.cplusplus.com/doc/tutorial/files/[^]and:http://www.cplusplus.com/reference/fstream/ifstream/open/[^]Then: ifstream studentfile; string studentfilename; cout >...

C++11

C++

How do I rename this resource? .rc file

11 Nov 2015 by KarstenK

The easiest way is to close Visual Studio completly, rename the file and open the *.sln file with a text editor and search and rename it also. You can delete the database files because the get rebuild when missing. Make a backup of all data before starting. ;-)

RSA File System Crash

21 Nov 2015 by Jochen Arndt

This line might be the source:fileStreamIn.read(&buffer.front(), buffer_size);The content of a std::string should not be modified directly. You are using front() here which allows the modification of the referenced character. But you are using it to modifiy the string content. Because...

C++11

Why this operator returns warning?

8 Dec 2015 by Jochen Arndt

The local variable temp goes out of scope when the function returns and is no longer valid afterwards.So you should return a value here rather a reference:Human Human::operator++(int){ Human temp(*this); operator++(); return temp;}[EDIT]See also here...

C++11

C++

How to allocate dynamically a vector of a class?

15 Dec 2015 by Are Riff

I am learning about dynamic memory and have a question.Let say I have this class.class Elf {private: double _health = 0;public: Elf(const double &health){_health = health;}};I can create an Elf object using smart pointer like this.unique_ptr vec1 =...

C++14

C++11

vector

I want to understand this pointer error.

17 Dec 2015 by Andreas Gieriet

See the definition of pop_back().E.g. from http://www.cplusplus.com/reference/vector/vector/pop_back/[^]. It says that pop_back() from an empty collection is undefined behavior, which includes "crashing".[EDIT]Your logic is broken: while(!human.empty() || !zombie.empty()) ... is also...

C++11

vector

Why erasing a vector element crashes the loop?

19 Feb 2016 by CPallini

removing duplicates is tricky, because you alter the vector content on-the-fly.The range loop is elegant but simply not suited for such a job. Try, for instanceauto itm = hall.begin();while(itm != hall.end()){ auto itn = hall.end(); while(--itn != itm) { if (...

C++11

How to detect if a func. Is a constexpr? And mark other func. Constexpr depending on it?

2 Jul 2016 by Shvetsov Evgeniy

Assuming i have some function template f1:templateint f1(int i, int j) throw() { return i + j + f2(i, j);}is there way to determine if 'f2(i, j)' can be a constexpr. (no matter it is a func. or a functor) and so mark 'f1' as a constexpr. too?What I have tried:I am...

C++11

C++14

C++

Why my sort function not working?

25 Jun 2016 by OriginalGriff

Indentation helps a lot when you look at code: it means you can see what is goign on a lot more clearly...But a quick glance says that the swap function:void swap(int *i,int *k){int j;// js any temperory element*i=*k;*k=j;}Is not going to work!What value do you put in k each...

Is an array-of-pointers a pointer-to-pointer in C++?

2 Jul 2016 by Philippe Mori

As you can see, your first 2 functions declare the same function. This would be similar to:void g(float p[3]) { /* ... */ }vsvoid g(float *p) { /* ... */ }You can call either of these function (assuming only one is declared and defined) like this:float pos[3] {1.3f, 4.3f,...

C++11

Reverse circular linked list fucntion goes wrong ! !

19 Dec 2016 by OriginalGriff

Use the debugger. That's part of what it is there for.Put a breakpoint at the start of the function, and step through look at closely at what is going on. What may help you understand is if you draw out on paper first what the list looks like - set up a simple one with say 4 nodes - then...

C++11

C++

To replace an elemnt in the 2 dimensional vector?

23 Dec 2016 by CPallini

In order to replace a string, I would rather usefor ( vector >::iterator it = v.begin(); it != v.end(); ++it){ if ( it->second == "OldString") it->second = "NEWSTRING";}or, with C++11 for ( auto & x : v){ if ( x.second == "OldString") x.second =...

C++11

Linux

C++ CRT detected VS:community

20 Mar 2017 by Jochen Arndt

The error is here:m_message = new char[strlen(value + 1)];That will allocate two characters less than required (random size when the passed string is empty).It must be:m_message = new char[strlen(value) + 1];The error is also present with G++ builds but not detected.

Shift the indexes in a string?

19 Jun 2017 by CPallini

If you need to insert blanks somewhere in the string (like your example suggests) then the string::insert method ( see string::insert - C++ Reference[^]) is your friend: #include #include using namespace std; int main() { string s = "hello"; s.insert(1, 1, ' '); ...

Encrypt and Decrypt using 2x2 Hill Cipher

1 Oct 2017 by CPallini

C++ implementation of 2x2 Hill cipher

C++11

C++

Dev

How do I debug this program?

27 Apr 2018 by Patrice T

I see a few problems in your code, but they are not the problem you are hunting. results() is ending by calling mainEvent() which is the function that called it, generally speaking, it is a bad idea because it look like an unintended recursion. Each function should end by returning to caller. To...

C++11

Program to find whether addition of two numbers in an integer array returns the value 'k' entered by the user .

29 May 2018 by Rick York

You don't need to define values for TRUE and FALSE. You have tagged this question as being for C++ and the language has the keywords true and false defined in it and that is all you need. Here is some pseudo code that should give you an idea. while( looping ) { if( array[m] +...

C++11

C++

I am struggling to understand what maps are in C++

12 Jun 2018 by Rick York

The primary reason they are so useful is they make searching and finding values of interest very fast. The first item in the map is called the key and it used for searching. Usually a binary tree or something similar holds the data behind the scenes with the first value being the identifier...

C++11

mapping

How to press the button in case if the number entered in edit control box is even

13 Jun 2018 by Patrice T

Quote: yes i want to click the button from code. if variable entered in edit control box is even then button get clicked. This is a bad idea ! Imagine the user want to enter the even number 123456. As the user type the number, you have: 1 => odd 12 => even 123 => odd 1234 => even 12345 => odd...

How to ascending or descending numbers in the array without using < and > symbols in C++?

9 Jul 2018 by Rick York

You can subtract two numbers and then test the sign of the result. A negative value means the second was larger than the first. You can determine the sign by testing the most significant bit - if it is set then it is a negative number. That can be done by masking off all other bits and...

C++14

C++11

How I can get status of PC defender

24 Sep 2018 by Leo Chapiro

Visual studio 2017 is only an IDE and is not relevant for your task. If you mean the windows defender, take a look at API / Windows Defender Functions, for example at WDStatus function: Returns the current status of Windows Defender. HRESULT WDStatus( BOOL *pfEnabled ); The status of...

C++11

How to extract day, month and year from integer (following 1900 date system)

16 Oct 2018 by OriginalGriff

Assuming that the integer value is "days since 1/1/1900", then you have to convert that to a date. So each leap year has 366 days, and each non-leap year has 365. Leap years are all those years divisible by 4 in the range 1900 to 2099, so I'd create an array of "year counts" 0, 365, 365+365,...

C++11

DateTime

Can I have the code for this problem in C++?

19 Oct 2018 by David O'Neil

int main() { play(paper); play(something); play(scissors); play(paper); return 0; } Hope this helps get you started Or maybe it will make you mad enough to try on your own, and show this a***hole (being me) what a jerk I am by succeeding. Or at least...

How use pointer in C# like C++

7 Nov 2018 by Afzaal Ahmad Zeeshan

If you want to use C# because, then you have to leave all that pointer luxury with the C++. The core concept of C# was to enable you to have a managed environment, where you only had to write the business logic instead of having to manage the low-level memory and hardware as well. C# itself is...

How to print the first word of a string

11 Nov 2018 by OriginalGriff

First, decide what makes a word "end"? It is a space? Well yes - but the first word of this reply doesn't end with one, and neither does the last word of this sentence! Or this. (And this one doesn't start with a word.) 3 of the sentences in this paragraph don't! So start by deciding what...

C++11