49,757 Topics
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| | Hey guys I am a noob when it comes to this stuff. I go to college for electrical engineering and me and my professor were discussing a cool senior project. There are regular vending machines in most buildings of the school that are connected to the schools network. The ethernet … |
| | I've download this following program source from a SVN repository.. [url]http://blanddns.no-ip.org:81/repos/public-smart/[/url] How do I compile it?? I've tried but it has c++ and java files included in it.. and some are even in separate folders. Can someone tell me how? Do I have to do command line? Do I need … |
| | I don't understand what I am doing wrong here. I am trying to quickly write this program so that I can use it to test a flowchart diagram that I made earlier. When the output comes up on the console "Enter a course name" and I put any input in … |
| | I am learning c++ now and have encountered a problem in trying to create single digit addition, multiplication and subtraction math questions. The numbers used in the questions are randomly generated from 1 to 9 and when I try to print the answer for the corresponding question, I get a …  |
| | Dear friends: I have a sparce matrix , and i want to write the matrix pattern to a postscripte file. Could you please told me how to write a postscripte file with c++ . Regards |
| | So i'm making this periodic table kinda program here mainly outta boredom. But I came across a problem, when I type in the name for the element, the program just closes. Any ideas on how to get it to work properly. Here's my current code. [CODE]#include <iostream> #include <windows.h> #include … |
| | [CODE]#define WIN32_LBAN_AND_MBAN #include <windows.h> LRESULT CALLBACK WindowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam); int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd) { WNDCLASSEX windowClass; ZeroMemory(&windowClass, sizeof(WNDCLASSEX)); windowClass.cbSize = sizeof(WNDCLASSEX); windowClass.style = CS_HREDRAW | CS_VREDRAW; windowClass.lpfnWndProc = (WNDPROC)WindowProc; windowClass.hInstance = hInstance; windowClass.hCursor = LoadCursor(NULL, IDC_ARROW); windowClass.hbrBackground = (HBRUSH)COLOR_WINDOW; … |
| | I don't understand how it works. What are lines 19-33 doing exactly? Why did they do "arraySize = obj.arraySize;" ? [CODE]#include <iostream> #include <iomanip> using namespace std; class NumberArray { private: double *aPtr; int arraySize; public: NumberArray(NumberArray &); NumberArray(int size, double value); ~NumberArray() { if (arraySize > 0) delete [] …  |
| | Hi! I am supposed to only use the "procedural fragment of C++", i.e. no object-oriented programming (like cin, cout etc). Vectors are not allowed either. So, one of my goals is to count the number of lines in a text file (let's call it train1.in) which contains data like: [ICODE] … |
| | Dear friends: I download a Matrix library "MET" from [url]http://met.sourceforge.net/[/url]. I want to compile it under windows system. I download the MinGw. when i excute the following command, it give the me the following errors: [CODE]G:\met>make g++ -Icommon -o xpr1Test xpr1Test.C -lm In file included from vecmat.h:35:0, from xpr1Test.C:6: xpr1.h:31:22: … |
| | the letter e is the most frequently used letter in the english language, and the letter z is the lease used. a friend of yours doing a blah blah believes that this may not be necessarily be true of writings of first year college students. to test his theory, he … |
| | Hi i am trying to write a program where the user inputs a list of space separated words (more than ten are required); the program then reverses and prints the order of the words. Example: input:“Extra Credit Programs”; output: “Programs Credit Extra” but my program s far is not behaving … |
| | The issue is that it doesn't seem as though the code isn't getting past the 3rd if-else statement, and even if the input is correct it will say invalid times and set the values to 0. I can't tell what the problem is. [CODE]#include <iostream> #include <string> using namespace std; …  |
 | i created a new project, added some textboxes and labels with one button. when i built the project the first time, i just got the error: general error c101008d: Failed to write the updated manifest to the resource of file "..\Debug\Login.exe". Access is denied. mt.exe Login someone help me please! |
| | Hi, what does this error mean? : error C2440: 'initializing' : cannot convert from 'char' to 'const char *' i'm trying to read an image from a file using this code: [COLOR="Green"]#include "itkImage.h" #include "itkImageFileReader.h" int main( int , char * argv) { typedef unsigned char PixelType; const unsigned int … |
| | Hye..i dont know how to output the position for array. [QUOTE] Enter value for array A(4x5): 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 Enter value for array B(4x5): 1 2 3 4 5 1 2 3 4 …  |
| | hi I m new here and not sure about how things go about... but could any one tell me about collaborations of objects in c++  |
| | I'd like to know: 1.) On line of code which says: "Production possibleExpansion(infile);", what is the nature of possibleExpansion(infile)? Is it a function? Is it an object of class Production? 2.) On line of code which says: "possibleExpansions.push_back(possibleExpansion);", what is the meaning of it? [CODE]#include "definition.h" #include "random.h" Definition::Definition(ifstream& infile) … |
| | The CashAndCreditShop supermarket determines the retail price of a product based on the time it is expected to stay on the shelf. Any item that is expected to sell in one week or less is marked up 10%, and any item that is expected to stay on the shelf for …  |
| | I'm running a structural analysis program in VS2010 which iterates through a loop up to 4000 times. The program keeps breaking on me around the 960th loop and gives the following error Unhandled exception at 0x0040cd1d in Structural Analysis Program.exe: 0xC000005: Access violation writing location 0x00000000. The error seems to … |
 | I have made a header file with a templated dynamic array class that I wish to convert into secure code. The problem is that since all of the code relies on the Template I cannot put it into a static library. Any ideas how I could still make the source … |
| | Need help converting from hex to binary any help is very appreciated!! [CODE]#include <string> #include <iostream> class Hex { private: //constructor std::string hexNumber; int decNumber; public: Hex(std::string hNum): hexNumber(hNum) {} Hex(int dNum): decNumber(dNum) {} ~Hex(); int toInt(); std::string toBin(); std::string toHex(); }; [/CODE] it keeps saying i need to put … |
| | Hey everyone.. I need some help writing code for c++ to make a plot. I think im suppose to use an array but im lost after that. The plots are suppose to look like the pictures in the link and the points come from a data file that im reading … |
| | [CODE]#include <iostream> using namespace std; int main() { double firstNo;// first number is stored here double secondNo; double result;//variable for result when first and second number are operated upon char operation;// place to store the user's inputed operation // asks the user to choose the first number cout<< "Enter in …  |
| | I'm looking for the best way to make a method available to a sub class (not talking inheritance, polymorphism at all, just standalone classes!) without handing down a million pointers to each sub class. [code] Class A; // contains many instances of other classes. Class Z; // one of those …  |
| | Hello, I'm working on a simple winsock2 messaging program with a client and a server. The server, which uses the same code as the client, save for some preprocessor directives, compiles fine, but the client throws up 3 unresovled external symbol errors: Error 1 error LNK2019: unresolved external symbol "public: … |
| | Hi there, I am a Delphi guy and I am a bit new to C++. I have this annoying error when I try to compile and I have no idea how to solve this: [B]error: request for member ‘GetVector’ in ‘gff’, which is of non-class type ‘TGff_File*’[/B] on line #20 … |
| | please help me with this i run a borland c++ 5.02, when i try to run this piece of code #include <windows.h> int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { MessageBox(NULL, "\tHello World!", "My first windows app", NULL); return 0; } i am getting an `unresolved external … |
| | This question has been bothering me all day. if I'm trying to pull out all strings that are in a txt file and all start with "abcde" is there anyway to find them, and copy the strings?? assuming the txt file contains lots of text |
| | Hi! I’ve been working on a project using C++ and I’m facing some difficulties. I have to write a user system consisting of two classes. One class “Account” with the parameters: Balance, password and username. Account management will contain functions for operating on the balance and for reading/writing the account … |
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