49,766 Topics
 | |
| | 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 … |
| | 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 … |
The End.