51,593 Topics
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| | Hello. I need some help with variable types. I am currently an 11th grader taking my first Computer science class. I am learning C++ and I would like to know how I can make 10/3 3.33 rather than 3 in C++. For example, a member on the forums updated my …  |
 | I read that using a policy class for a function that will be called in a tight loop is much faster than using a polymorphic function. However, I setup this demo and the timing indicates that it is exactly the opposite!? The policy version takes between 2-3x longer than the …  |
| | Hello, and happy new year first of all. What I am trying to do is make a program that according to the values the user inputs then displays a polynomial. The forumla for the polynomial is this: [code]float par(float x) //H timh ths synarthshs sto shmeio Xo { float tel=trap[0][1], … |
| | hi everybody, the double type is 8B, right ? So if i use this code : [CODE]double pear[500000000];[/CODE] it will use 4GB of Ram ? or there's a limit for arrays ? thanks  |
| | I have a feeling that I can come up with a much better title for this thread once I know the answer to this question :). Say I have a function template template <typename T> void MyFunction(). Now I want to specialize MyFunction for a templated type. That is, say … |
| | I don't know should I post this article at here or not, if you think this should belongs to other area, please move it to there. I need to design some domain specific language to generate some C++ source codes. I have considered about using xml directly instead of designing … |
| | Greetings! I have a C# dll generated from a .resx file (I believe it's called a satellite dll). This stores simple key to string mappings (used for language localization). I was wondering if it's possible and feasible to access the information stored in the C# dll from a C++ unmanaged … |
| | Hi there, I'm trying to access a resource only dll (compiled with the [i]/NOENTRY[/i] linker option) within C#. The dll file was created using a rc file that contains a [b]STRINGTABLE[/b]. I used [b]CComBSTR[/b] to load the string resource from the dll in C++; I'm not sure how to do …  |
| | Hi all, I've been trying to find part of a string in a vector. The problem being that I can only get it to work if I enter the entire string, but I need it so that I only search for the first part of the string in the vector. …  |
 | I am trying to implement process pairs redundancy (process level redundancy) in c/c++. basically there is a active core process 1 running on one system and its standby copy, process 2, is running on other system. When ever the active one goes down the standby becomes active and executes the …  |
| | Hello! I am currently working on a text adventure in C++ and could use some help. What I'm trying to do is let the user input a command like the following: 'go kitchen' 'open door with key' and make the game react accordingly. I have a text parser which splits … |
| | [URL="http://stackoverflow.com/questions/194812/list-of-freely-available-programming-books/"]List of free programming books[/URL]. Enjoy and happy new year! |
| | I recently have been working on a GLUT project in Code:Blocks. Everything in the code compiles correctly, yet every build seems to return the same result. I narrowed it down to an OpenGL, non-GLUT function : glFrustum. I change the parameters yet the runs are all the same. It could … |
| | Matrix given in memory; the objective is to print the spiral in opposite direction from clockwise (left column down the right lower range, right up column, a series of upper left, etc. until you get to the environment). This works just for dimension 3x3. It should works for MxN dimension, …  |
| | having issues with my program running propperly. I think i have it right but i need a more skilled eye to take a look at it for me and set me in right direction. the code will complie, but everything i enter comes up invalid when some of it should … |
 | Hii , Data reader reads table rows into the 2d array. The array fills with the last row of the table. How many loops are there?. Why :?: [CODE] Input Table : ----------------------- id red green blue 1101 12 11 13 1102 12 12 14 1103 13 14 13 ------------------------ … |
| | Hi everybody, I am new c++ and a few days ago I downloaded Qt for gui developing, I found some videos about it but I need something more advanced. Videos from basic to advanced ?? If i watch all of [URL="http://www.youtube.com/playlist?list=PL2D1942A4688E9D63&feature=plcp"]these[/URL] , will it be enough to make professional apps … |
| | Hi there, I am trying to compile devcpp project that contains one source file helloworld.cpp [CODE] #include <iostream> using namespace std; int main () { cout << "Hello World!"; system("PAUSE"); return 0; }[/CODE] I get this error: [ICODE] C:\Dev-Cpp\Makefile.win [Build Error] [helloworld.o] Error 1 [/ICODE] Compile log is as follows: … |
| | hi all, I am new to c++. I want to return array. I found that I have to use pointers but doesnt have idea. here is my code [code] // test2.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <iostream> using namespace std; const int … |
| | Hi all, I just try to input integer typed table rows into 2D integer array. I've tried the code below but it outputs me only last row :( [CODE] Input Table : ----------------------- id red green blue 1101 12 11 13 1102 12 12 14 1103 13 14 13 ------------------------ … |
| | Below is my code to convert from decimal to binary: [CODE]#include "stdafx.h" typedef struct tamNode { int Into; struct tamNode *Next; }Node; typedef struct { Node *Head; Node *Tail; }List; void createList(List &l) { l.Head = NULL; l.Tail = NULL; } Node* createNode(int x) { Node *p; p = new …  |
| | I am making a program for my week 1 programming II class. The assignment is... Create a structure for a classroom. Make sure it includes the following: Room Number, Lecture Name, List of Students, Number of chairs, Window (Yes/No), Projector (Yes/No), Available(Yes/No). Instructions: • Create functions that allow you to …  |
| | What is the default calling convention of function used in C unless you define it implicitely? And write the different types of function calling conventions that the c99 standard dialect support? |
| | Hi, I'm a student and I've been using Turbo C++ (v4.5) for over a year now (that's what they teach us at school). I just attempted to try writing a simple code in Microsoft Visual C++ 2010 Express. I've even had a few successful runs, but when I look into … |
| | 'Creating A Shared Assembly in .NET public class SharedObject Public Function Greeting(ByVal name as String) As String Return ("SharedObject says Hi : " & name ) End Function End Class |
| | Hello DaniWeb, its been a long time! Anyway, I'm trying to put classes and functions inside .h files and define them in respective .cpp files. Whenever I try this, I get a weird error that I think has something to do with my constructor: obj\Debug\main.o||In function `_static_initialization_and_destruction_0': | main.cpp|33|undefined reference … |
| | I found a tutorial on lazyfoo.net and when i downloaded the source it just opens and closes, why is this? im using code blocks. [CODE]/*This source code copyrighted by Lazy Foo' Productions (2004-2012) and may not be redestributed without written permission.*/ //The headers #include <SDL.h> #include <SDL_image.h> #include <string> //Screen …  |
| | Hi guys. I'm beginner in programing. I must write C++ program, but after 5 days reading in Google now I'm very confused(my hеad will explode). The problem is: Write a program to find the roots of quadratic equation(MFC AppWizard -> dialog based). Requirements: 1.use windows form(at least one button and … |
| | Well, I just started programming in C++, this is my 3rd day and I finally built my first basic program. Just a basic calculator that takes two numbers and either multiplies, divides, adds, or subtract them. I do not know how to make a menu in C++ and I'm just … |
| | Hello, I'm using SFML to make a game, and, as it has no built-in collision detection function, I made up my own algorithm. Here it is: [CODE] // Collision.cpp #include "Collision.h" Side CollisionBoxTest(sf::Sprite Hitter, sf::Sprite Hittee) { sf::Rect<int> HitterBox; sf::Rect<int> HitteeBox; // Initialize parameters for Hitterbox int BoxHeight = Hitter.GetHeight(); …  |
| | i have an excel sheet with me. i want 2 retrieve the data in c++ .. the retrieval should be in such a way that if a content of a cell is given it should tel me the content of the parallel cell .. i'm trying out alot for this …  |
| | How do they help with coding? They don't seem like it makes the code shorter so I'm confused... maybe I'm doing it wrong but... could anyone explain to me about enums and structures please? It'd be greatly appreciated, Merry Christmas! |
| | let me know what flush(stdin) describe. is ti any kind of function or something else................... try resolve my problem |
| | I am using GL_TRIANGLE_STRIP to draw my terrain to the screen, however when I compile and run the program I get nothing. When I change GL_TRIANGLE_STRIP to GL_LINES it shows up and works. What can I do to get it working with GL_TRIANGLE_STRIP? here is my draw code: [CODE] void … |
| | Hi all, This is quite a specific question with a relatively large amount of explaining so ill try to make it really short to try save peoples time. In a nutshell what i have is a large csv file and im trying to search a particular entry (line in the … |
| | Hi am trying to write a program and its giving me this error "cannot instantiate abstract class", can someone help me please? this is the code: Header: [CODE]#ifndef ABSTRACTGEOMETRICOBJECT_H #define ABSTRACTGEOMETRICOBJECT_H #include <string> using namespace std; class GeometricObject { public: GeometricObject(); GeometricObject(string color, bool filled); public: string getColor(); void setColor(string … |
| | I need to write a code to be able to interpret the input date to calendar system. First input is the date and second input is the first day of the year. I dont know how to start. I hope someone could help me. Thanks 12/10/2011 S Output: October, 2011 … |
 | Ok, here I come with a some sort of big analysis with pointer, array, vector, iterator and address of memory... using this input: [CODE] // hakim makan nasi // ayam yang basi // sambil tengok // hafiz yang tergelak // gelak [/CODE] with this code: [CODE] #include <cstring> #include <iostream> …  |
| | C++ emergency need this word doc to be done and i can't do it my self cause it bit to hard for me plz help Write a program to survey people, that will generate statistics about their age profile. It will firstly ask for the sample size. Then it will …  |
| | I'm new to c++. I was studying data structures and came to know Linked Lists Lately. We had a problem of finding an item stored inside a linked list and here's the code I wrote using Visual Studio to store and find an item. This code gives me a run … |
| | Can anyone explain why I can't sort this vector: [code] #include <iostream> #include <vector> #include <algorithm> #include <memory> struct Test { public: Test(const unsigned int input) : a(input){} int a; }; struct SortFunctor { bool operator()(std::shared_ptr<Test>& object1, std::shared_ptr<Test>& object2) { return(object1->a < object2->a); } }; ////////////////////////// int main (int argc, … |
| | Hi everybody, Is it possible to write a c++ compiler in c++ ? Its bootstrapping, right ?? In which language are usually written compilers ? Thanks |
| | I have a piece of software, that I would like to license and protect but I am having a hard time finding the right license, and how I would go about with it. Is there a license that allows: - Free distribution of the executable and DLL's - Costs money … |
| | This is a way to force a given aspect ratio of a window any time the user tries to resize or cascade it. [CODE] double aspectRatio = 640.0 / 480.0; WPARAM sideBeingDragged = 0; LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch(msg) { case WM_CLOSE: DestroyWindow(hwnd); … |
| | I have an idea for a program but I don't know if its possible. I want to write a program that can read commands from a file.. For example, I've seen bots that can parse and read javascript for games and execute whatever is in the .java file.. How can … |
| | i have got a project where i have to connect c program to mysql database. but, i have zero knowledge of mysql. so, iwas looking for a mysql tutorial with c language . but. most of the tutorials online are mysql with php. so, could you please provide me some … |
 | C++ course has started in my college. I would like to know the best beginner book for C++. My teacher has referred Robert Lafore and The Complete Reference. Since there are a lot of suggestions given in the sticky thread, I am confused. Thanks in advance :) |
| | I have a Win32 Application in C++. At runtime, It loads a Matrix stored as TXT file in the working directory with I/O functions. I have problems to distribute my program (EXE and DLL) because people normally forget to move the text files together with the Application. How can I … |
| | at first, plec correct me this one... [code] std::string explanation; // this upper coding char explanation; //after entering void to display if(item_code=='A') explanation='BABY WEAR'; else if(item_code=='B') explanation='CHILDREN WEAR; else if(item_code=='A') explanation='LADIES WEAR'; else if(item_code=='A') explanation='MENSWEAR';[/code] BABY WEAR and others was error, what should i put? plz correct my coding above …  |
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