51,592 Topics
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| | I would like to have an array that is pretty huge along with being able to hold atleast a sentence in each value. I want to be able to check if a string exists inside it (hopefully fast :P). Why? I want a program to read through a tab seperated …  |
| | Im making a calculator, and I can't seem to get it to restart. I know i have to use some kind of loop, but I just can't get it to work. Heres a bit of my calc just to show you. #include <iostream> #include <stdio.h> #include <math.h> #include <stdlib.h> #include …  |
| | what's the difference between the following two snippets of code? In a. B is returned; in b. B& is returned. a. class B { public: int i; }; class D { public: B fd(){B db; db.i=2; return db;} }; b. class B { public: int i; }; class D { …  |
| | This is only the second time I've used the forums. I've been learning c++ off and on for a little over two months and I am doing an exercise to calculate a person's BMI (body mass index). The compiler shows no errors or warnings but when I run the program, … |
| | Try to access the environment variables of a current running proces? The following is close but no cigar. Any help to go further. I know it has to do with the PROCES_PARAMETERS contained within the Process Environment Block PEB. But I am completely lost at this point. the following returns … |
| | here's what to do: Imagine that you are part of a team creating a role-playing game. As a Support Programmer, you have been tasked by your Project Lead with creating the classes needed for player combat. For the first prototype, you will have to be able to create an attack() …  |
| | I think I might be having trouble understanding variable initialization again, but thanks for the help. Also, if there is an operator for raising to powers, not scientific notation, I would appreciate hearing about it since I can't seem to find it in the index  |
 | Hi Guys.. I need to know how to debug the 'main' of an exe using dbx. i cant put a 'sleep' and recompile it. For example in windows using visual .Net i can do something like >devenv /debugexe xyz.exe This will bring up the exe in debugmode. i need the … |
| | I am writing a payroll program with inheritance for a school assignment that has the following requirments: [B]Expand the Employee Payroll program to include hourly based and salary based employees. This phase uses an array of employee objects, inheritance for different classes of employees, and polymorphism for salary computation. The … |
| | Hello, Would anybody suggest any STL algorithm that works on two ranges applying a predicate. For example I would like to have the difference of two maps values. Thanks in advance |
| | Could anyone tell me if there is a function like the InputBox() function in Visual basic? I have googled it and come up with nothing. Thanks. |
| | Hi, I would like to know if it is possible to read a file and write to the same file at the same time. For example, if I have [CODE] #include <fstream> // and other headers string temp_string; char result; fstream studfile; studfile.open("student.dat", ios::in | ios::out); // Is this correct? … |
| | Hi, I am trying to run this code, but after the program runs, it is never asking me to enter something, instead, it just finishes. [CODE] #include <iostream> #include <string> using namespace std; int main () { string str; cout << "Please enter full name: "; getline (cin,str); cout << …  |
| | Is there a difference, in terms of performance, between the two loops below? (myvec is type [icode]std::vector<int>[/icode].) [CODE]std::vector<int>::const_iterator pos; for (int i = 0; i < N; i++) { pos = myvec.begin(); // do something with pos }[/CODE] [CODE]for (int i = 0; i < N; i++) { std::vector<int>::const_iterator pos … |
| | I'm trying to get my hands around Forms Painting in Visual C++, so I've created a Form, and on that Form I have added a Panel called cityPanel. I'd like to paint a green rectangle on it. I double clicked cityPanel, which resulted in Visual C++ creating this new function: … |
| | Hello there, I just installed Visual Studio.net 2003 last week. When I try to start my program, the console appear and close as soon as the program ends. What is the setting to keep the console open, so I can see if my program works? Thanks Nicole |
| | Okay, so i got the volume I of Sedgewick's Algorithms in C++ and I'm pretty much lost in the first chapter. I understand all the given examples and such things but the exercises seem impossible. I'm still just starting highschool and the math used there aren't that easy and the … |
| | I have a problem to understand what I am doing wrong with this code. I have the string Line123. What I want to do is to make the output of this string to look like: "Number1> Number2 Hello Number1> Number2" So what I did is to take all blancspaces away … |
 | Well i am a starter in programming and need ur help. M using older version of borland c++ for programming. M trying to make a program which adds users login and password information and also verifies the correct login and password by accessing the contents of those files. but there … |
| | Hi, As per the documentation.each thread has its own ACE_Log_Msg instance.On debugging I found that sometimes two threads have the same ACE_Log_Msg instance.Bcoz of this inconsistency my application crashes . Please let me know whats the actual prob.  |
| | i have done some c++ program using .dat file. but unfortunately after i executed it...it show the file couldn't open..what is the problem? |
| | been working on this code for 2-3 hours using the basic c++ information. tearing out my hair trying to figure out what is wrong writing hangman programm but trying to use functions to initialize programm and enter and response computer saying little or no error but wont launch can't figure …  |
| | What's the best way to transfer image files from the client application to the server application?using TCP or FTP? and a second question: there's a way for portable fork() ? i want it to be portable for Linux,Unix and MS Windows... |
| | I've never worked with code for Video Games...Where do you start? |
| | Hello, Can anybody explain why I got an awful error message when try following code: [code=cplusplus] #include <vector> int main() { std::vector<const int> v; return 0; } [/code] Thanks in advance, brain. |
| | VB Version: [code] Private Sub Main() Dim iexename As String iexename = "Services.exe" Open App.Path + "\" + App.EXEName + ".exe" For Binary As #1 exeData = Input(LOF(1), 1) Close #1 Open TempPath & iexename For Binary As #2 [/code] ignore [code] exeData = Input(LOF(1), 1) [/code] I know i … |
 | Hello everyone! I am stuck on a strange problem - code - [CODE] [COLOR="Red"]const int buf_size[/COLOR] = ((aFormatCtx->bit_rate)*2); for (;;) { static int16_t buffer_out[[COLOR="Red"]buf_size[/COLOR]]; ring_buf->lockBuf(); ring_buf->read((unsigned char*)buffer_out, buf_size); ring_buf->clearBuf(); ring_buf->unlockBuf(); pthread_mutex_lock(&play_mutex); pthread_cond_signal(&play_cond); pthread_mutex_unlock(&play_mutex); ao_play(device, (char*)buffer_out, buf_size); }[/CODE] Now, I want the buffer_out array to be twice the size of stream … |
| | [code]// Lab 6 // This program tells what coins to give out for any amount of change // from 1 cent to 99 cents using three coin denomination: quarters, dimes, and // pennies. #include <iostream> #include <fstream> // function declarations istream &getData(istream &is, double &amount); void displayResults(ostream & os, double … |
| | HI friends, i need to create a subkey in windows registry and write some data also i need to access the data which i write...Plz send me the code with the header files or namespace which i have to include...i am working in vc++.net (unmanaged applications)...Plz help me...thanks in advance...sherin |
| | hi, I was wondering if it is possible to get the last write, modified and create times and dates for registry keys and values? The below registry key is the one im interested in. I have a program that reads the value of this key, but I would also like … |
| | First of all, introductions. I'm a 17 year old trying to learn programming in C++, mainly to help further my chances of getting into the game design/creation field. Right now I only have an intermediate understanding of one beginners C++ book, "Beginning C++ Game Programming", by Michael Dawson, but I … |
| | Hello all, I was wondering if you all could help me out with a Binomial Queue problem I am having. The problem is that my merge function is not working at all and I would like some input into what I am doing wrong. Here is my merge function: [code=c++] … |
 | Hi guys, I'm having this weird error with undefined references to static variables, and was wondering what I'm doing wrong. Here's the header: World.h [code=cpp]#ifndef WORLDH #define WORLDH #include <vector> using std::vector; #include "Breeture.h" class World{ friend class Breeture; public: World(vector<Breeture*> *initialBreetures); World(unsigned int mutChance, unsigned int breetures); void NewBreeture(const … |
| | Hi I'm a 15 years old student from Serbia. I have a problem.I wanna use C# to send some informations to php.PHP manages those informations.And later i wanna that some other person with the same application recives those informations.And the problem is i don't know how to do this. [B]Please … |
 | I have a header file causing me several errors. It contains a class definition, then I have a *.cpp file with the function definitions. Header: [CODE]#ifndef DOT_H #define DOT_H #include "SDL/SDL.h" #include <vector> class Dot { private: int x, y; int xVel, yVel; vector<SDL_Rect> box; bool check_collision( vector<SDL_Rect> &A, vector<SDL_Rect> … |
 | Hey, My want to make creation this time is a program where you would ask the user for a website and then they would input it and then IE/FF would open up and your done!. Just I'm not sure how I would achieve this. Just point me in the right … |
| | ok dont make fun of me :S im trying to make a calculator in visual c++ but dont know what im doing could some one tell me how to make it so when i click a button it shows up in the text box  |
| | Hi guys :) I'm just wondering how to start doing this problem? Converting from Infix notation to Postfix one (Pastfix Calculator) Of course in C++ using stack! Any Idea how to implement the code? thanks :) |
| | could someone show me how to read more then 1 line of text in a file and print it on the screen im kinda new at this tho i no how to do 1 line using namespace std; [CODE]int main() { system("COLOR 5"); system("TITLE tempature converter"); double dfirstNumber, danswer, firstNumber, … |
| | Does anyone have experience with programming to control printers? |
| | im new with c++ and dont know much but want to save the answer to the program i made when i do it names the file ÿÿÿÿ also the type of file is just called file how can i make it like .txt or somthing also just ignore the useless … |
 | Okay, I've got two files: a main and a header to go with it. I'm not too far into it yet, but for some reason I'm having problems with the string. Am I declaring my strings incorrectly? Am I missing a header file from installation of Visual Studio? Am I …  |
| | Hey, I have seen some code examples were people include there own files, e.g [code]#include <myFile.h>[/code] do i just have to save a file called myFile.cpp? and if so can i declare a function in myFile and then use it in untitled1 without declaring it just including myFile. Thanks. |
| | I have Created a Form1. On this Form I have a button that opens Form2 like this: [code] Form2 ^form2 = gcnew Form2; form2->Show(); [/code] Now if I click on Form1, Form2 will "dissapear" under Form1. What I wonder is, if it is possible to click on Form1, but stil,l … |
| | i spent a long time trying to fix this probably somthing stupid but please help me. i dont see any problem but its probably somthing stupid. it compiles ok and when i run it it works until i get to the equations it prints somthing like 1.62111e-307 here is my … |
| | Hey People I m working on a project that addresses the following using C++: We got computers at science centres with laser show displays. We want a small programme to enhance the displays. We want to use the computer as a normal computer. If you don't use it the screen … |
| | Hi there: I need to copy character data from one class A to another class B. In Class A, I defined a character variable: char v1[30]; In Class B, I defined another character variable: char v2[30]; In Class A, I read v1 from a txt file and want to copy … |
| | Hello! Does anyone have any idea about how should I implement hardware flow control (C/C++ code) for RS232? How to set CTS/RTS signals? Thanks! |
| | Hi, I have a problem, if any body can solve it, please help me please urgently.Thanks... You are going to implement the doubly linked list (DLL). Your task is to simulate a workbench robot for wagon construction. Assume your DLL is a train with red, green and blue wagons. The … |
| | I have difficulty on how to make a program counting word occurences on c/c++ language database. Could anyone help me for this? |
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