51,593 Topics
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| | Hi Everyone, I have been trying to teach myself how to code for more than a year now, having started with VBA and then switching to c++. Recently I have been forced to confront how horrific my coding practices are, and have been doing pennance by trying to modify 1500 …  |
| | Hello, I'm still learning C++, and I have a question that I'm not even sure how to search for it, so sorry if this is a repeat. The thing is that I'm trying to make, for a project a-for lack of a better word-memory manager. I want to have kind …  |
 | Generally people sit in front of computers for a long time which results in eye strain. We indeed forget to take a break. So here is a good freeware called FADETOP which reminds you to take a break after every 15 minutes. However you can change the default time. You …  |
| | Hi, I would like to know how I would modify the close (X) button in the GUI. For example, I would like to be able to have the user click on it and the program to bring up a message box from the MessageBox::Show() function that I type in. This …  |
| | I am having trouble understanding the concept of virtual functionsin c++.i couldn't find any simple example code for me to understand.can anyone show a simple program using virtual functions and it's importance? Thanks |
 | I'm using the function GetBitmapBits. MSDN says of the function > The GetBitmapBits function copies the bitmap bits of a specified device-dependent bitmap into a buffer. What it does not say, is how the data is stored, and I need to know this if I'm to analyze each specific color. … |
| | i'm not sure which STL container to use, what i'm going to be using it for is adding elements at the end and removing elements from any point inside it, i've looked into the different containers but its all a bit confusing so some advice would be great. |
| | Hi I am trying to create a loop that increments a cars mileage while the fuel decreases by 1 gallon for every 24 miles. Instructions: To be able to work with the FuelGauge Object. It should decrease the FuelGauge object's current amount of fuel by 1 gallon for every 24 … |
| | I'm new to C++ and I'm having so much trouble with this problem. I honestly don't know what I'm doing wrong, I've tried everything but I still can't seem to make the program work. This is the problem: Write a program that reads in ten whole numbers and that outputsthe … |
 | hey guys !!! i have to sort the students according to their first and last names here is the code i have written so far ,, it inputs the first names and last names and then it stops working . please help me with this ,, thank u #include <iostream> …  |
| | `MSXML DLL : #import <msxml3.dll>` I am writing XML using MSXML DOM & expected to add multiple processing instruction. ex: <?xml version="1.0" encoding="ISO-8859-1"?> ------ first processing instruction. <?xml-stylesheet type="text/xsl" href="cdcatalog.xsl"?> ------ second processing instruction. <catalog> <cd> <title>Empire Burlesque</title> <artist>Bob Dylan</artist> <country>USA</country> <company>Columbia</company> <price>10.90</price> <year>1985</year> </cd> </catalog> I have write below … |
 | Hi Everyone, Very beginner with C++. Reading some books and trying to write some codes as much as I can. I'm trying to understand what voiding a function does. Now in the book and the searches I did says it doesn't return anything. But looking at the code below, doesn't … |
 | I'm not able to figure out how to **change** the **icon** of a **console application** in **Borland C++** (v5.02). Can you help me figure out? |
 | Write a program in C++ to accept two time given in hours and minutes using a function input ( ) , then pass these values to a function called addtime( ) to calculate the sum of two times ( using returning structure form function )  |
| | Evniorment : Windows 7.0 , C++ , Multithreading I have created a new worker thread to receive data on socket & add it into static multimap. **code snap :** //remember mymultimap is static data type static std::multimap<string,string> mymultimap; EnterCriticalSection(&m_criticalsection); mymultimap.insert ( "aaa", "bbb") ); LeaveCriticalSection(&m_criticalsection); At same time my main …  |
| | Can we access updated public variable of one class in another class without inheritance. Just like below. This class A which have public int variable x. In updateValue function i have updated x value. class A { public: int x; A() { x=0; } void updateValue() { for(int i=1; i<=5; … |
| | Hi, I am trying to test this timer movement and I just don't understand why the rectanglee is not moving right and down. Here is a simple test. Using GLFW. #include <GL/glfw.h> #include <stdlib.h> void Init() { //! Create the viewport and projection glClearColor(0.4f,0.4f,0.4f,1.0f); glViewport(0, 0, 800, 600); glMatrixMode(GL_PROJECTION); glLoadIdentity(); … |
| | 1.binary 2.decimal 3.octaldecimal 4.hexadecimal enter your choices 1-4?_ enter binary:_ in decimal:_ in octal:_ in hexa:_ do you want to repeat the programm? yes or no?_ |
| | Hi all, This code below is not my own work but is exactly what I need for my project, the code runs a real time clock through an Arduno Duo development board as it's micro-controller using an I2C connection if that all makes sense. The problem is when running the … |
| | I'm trying to make a program for my computer science class and it requires that I run output to the console as well as to a file. I'm looking for a way to intialize a string at the beginning of the program and pass the variable by reference to my … |
| | string location = Environment.CurrentDirectory; string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source =" + location + "\\harita.accdb"; // get records from the Shippers table string commandString = "Select x from map"; //create the data set command object and the DataSet OleDbDataAdapter DataAdapter = new OleDbDataAdapter(commandString, connectionString); DataSet ds = new DataSet(); // fill …  |
| | I have searched high and low for a definitive answer to this, and I cannot find one (that I understand) The windows function [GetPixel](http://msdn.microsoft.com/en-us/library/windows/desktop/dd144909(v=vs.85).aspx) takes 3 arguments (HDC, int, int). Both ints represent a coordinate in the devive context, but are measured in logical units, x = > The x-coordinate, … |
 | Heres the assignment: > Write a program that will perform sorting and searching across records stored in a file. > The program should first query the user for a filename. The program should open the file and read > the first entry. It defines the number of records in the … |
 | The following code block is producing and endless loop and I can't figure out why. Note that charv is just he second command line argument in the main function. int testNumber = 1; while(argv != '\0') { std::cout << testNumber; argv++; testNumber++; } I wrote this piece of code just … |
 | Hello everyone I am running Ubuntu 12.04 compiling a c++ file which has the following code #include <iostream> #include <libusb-1.0/libusb.h> using namespace std; int main(){ //pointer to pointer of device used to retrieve a list of devices libusb_device **devs; libusb_device_handle *dev_handle; //a device handle libusb_context *ctx = NULL; //A LIBUSB …  |
| | so i was wondering if my program could be converted to a string version, if so gimme a start please. I also would like to find out how to set my speed variable if when entered it is less than zero for it to display an error statement, how would … |
| | So I'm just having a super fun time with overloaded operators and the friend function. I have an addressbook, and for my assignment I have to use the friend function to overload a few different operators. I think I understand how to type the friend function out to tie it … |
| | I'm here with what might seem like a very basic question, but I cannot figure it out. I am using EnumChildWindows winapi to identify a particular child window of google chrome browser. I fail when trying to return the handle of that child window when found. BOOL CALLBACK enum_wnd_proc(HWND h, … |
| | Me and my friend are aspiring Indie Game devs. and we're hoping to get some help. As the developer of the duo (him being artwork and music), I need to create a physics engine for the game. I am sure there are some out there, but I think building one … |
 | Hello everyone, I'm studying the while statement now, and there is an example code and I tried to make it and see what it does. When I wanted to start it said it has errors and when I started with debugging I get a weird statement on my cmd program. …  |
| | So i just started my project on a cpu sim , but right of the bat i ran into a problem #include <cstdlib> #include <fstream> #include <iostream> using namespace std; /* * */ int main(int argc, char** argv) { return 0; } void cpu() { } void memory() { int … |
| | Ok so here is my problem, i have to write a simple computr system consisting of the processor and the memory, The project will simulate a simple computer system consisting of a CPU and Memory. The CPU and Memory will be simulated by separate processes that communicate I have to … |
| | Hello, Will you please write a c++ program which includes all functions, 1) Recursive function for "vowels", that returns number of vowels in string. 2) Recursive function for "sum of array" 3) Program that uses a recursive function to check whether a string is Palindrome 4) Program that uses recursive …  |
 | #include<iostream.h> #include<conio.h> using namespace std; int re(int); int main() { int a, asd; cout<<"enter number\n"; cin>>a; asd=re(a); cout<<asd; getch(); return 0; } int re(int a) { int b; if(a==1) return ( 1 ) ; else b=re(a-1); return (b); } Hey, i was just trying to understand the concept of recursive … |
| | Hello All, I am new to this so I am not sure if this is going to post correctly. I am trying to create a rock, paper, scissors game. My issue with my code is I only want the code to repeat if the computer picks the same choice as … |
| | I've spent the better part of two hours going over my code line by line and I cannot find the problem for the life of me. #include "stdafx.h" #include <iostream> using namespace std; class NumberList { struct ListNode { int value; ListNode *next; public: ListNode(int val, ListNode * nextp = …  |
| | hello programmers . I have a question not a syntax one but I need it for speed in contests we have a 3x3 array and when we call a number it add to itself and around him +1 but in many casses like [0][1] when we want to add around …  |
| | I'm having trouble solving this problem in C++: 2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20? I have …  |
| | Hallo everyone, I've been studying C++ active for a couple of days. And I was thinking about that all my codes and with: { return 0; } So I wanted to know why and in my book I found: > The only statement in this block is a return, which …  |
 | This program is supposed to shuffle a Deck of cards and display them so I know it is working correctly. But one of the values displayed is -858993460 which is not possible when it should only be between 1 and 52. Obviously there is some sort of data loss going … |
| | my professor has asked us to solve the following problem but im having trouble understanding it **Write a function that takes in a 2 dimensional array of integers and returns the third largest number. Let the number of columns of your 2 dimensional array be 5. Call this function from …  |
| | Alright so I've been struggling to find the error but I simply can't. Given the following code: #include <iostream> #include <vector> enum ScriptType { SCRIPT_TYPE_CREATURE_SCRIPT, SCRIPT_TYPE_PLAYER_SCRIPT }; class Script { private: ScriptType type; public: Script(ScriptType type) : type(type) { } ScriptType getScriptType() const { return type; } }; class CreatureScript … |
| | Can any body have code to make own data types  |
 | anyone know how to use bubble sort and also binary search ? this program cannot search out the name that user insert. anyone know how to fix it ? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include<iostream> #include<string> #define size 5 using namespace std; struct student { string name; int id; string prog; double cgpa; }; … |
| | Hello daniweb, I've been trying to impliment arrow keys into my program, I've found a way, but the problem is I cant figure out how to use the enter key to select an option as follows: pawns: int pawn; system("cls"); pawndd: gotoxy(0,0); SetConsoleTextAttribute(hColor,455); cout<<" RETURN TO PREVIOUS MENU"; SetConsoleTextAttribute(hColor,23); cout<<"\n"; … |
| | 1. Search Benchmarks Create a New Project called YourLastnameSearch. int array[20] = {78, 45, 33, 1, 6, 41, 99, 54, 73, 28, 101, 60, 21, 82, 11, 15, 654, 36, 52, 70}; Write a program that has an array of 20 integers. (You must use the above array.) It should … |
 | After appending an item to a QList which is pointed to by a QMutableListIterator, I find out the next value of the iterator points outside the list. Or can't i point the iterator to any where in the list except the beginning and end? Please i need help. |
| | Hello everyone, I have written a code for binary search for my class. My professor asked us to create it using bool, and the header function "bool binarySearch(int a[], int start, int end, int number)". I am having some issues with it. it all seems fine until i get to … |
| | Hi All, While executing below code without using assigment operator it works fine , eventhough i have been used pointer values, so any way it must crash as The memory that s2 used to point to was never deleted; it is lost forever as both a and b now point … |
| | i insert the different id , but the program out with pointer value anyone know why ??? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #include<iostream> #include<string> #define MAX 6 #define size 10 using namespace std; struct student { string name; int id; string prog; double cgpa; }; class stinfo { private: student data[size]; int last; public: … |
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