Software Development Forum

double & val = 66.6; //illegal const double & val = 66.6; //legal I was just doing some demo programs and came through the above concept but not able to identify what exactly the need of the above concept . what magic exactly const is doing in the second case …

I am attempting to write a very simple chat program to test out ServerSockets and Sockets, the code should work, but when the client make a connection to the server it does not move past the accept method. I know they connected because as soon as I close the client …

Both DataOutputStream and PrintStream do basically the same thing - convert primitive types and Strings to bytes before writing them (writeUTF() is an exception). Why different classes ?

Hello All, I was doing some multi-threaded programming using the new C++11. This thought came across my mind: Is there any problem if some shared data is accessed by multiple cores on a CPU? Even if it is just a read. Does this lead to some problem? Could anyone please …

Hello everyone, With the help of some of you guys, i managed to make my first program! To share it with some people, but to prevent that everybody can use it, i would like to build a licence in it. Therefore I want to make a program, so I can …

Hello, Can you please suggest me some 3rd party C++ libraries like RogueWave SourcePro C++. Thanks in advance, Amit M.

I have to write a program that will input a text paragraph from the user. The maximum size of the string will be 500.I have to write a program in which if user select 'R' or 'r' then user is asked to enter a word he wants to replace and …

Hi, I want to creat a record of user journey thought the game I'm coding, that would record a script of the user inputs to a separate log file, I am thinking of creating a userrecord class and the user input will be stored into a text file using filewriter …

I Just wanna know what happens if we try to do the following in C++: `"abc"+'d'` i.e what happens if we concatenate a character to a C-string.

I have 3 comboboxcolumn in datagridview.I want to display its value in grid if its value in database table is not null.Eg one column is caste.if this is null in my databse table then combobox column should be added to grid else caste value shold be seen in combobox when …

i have vb6 project with cr8 and 10 , its correctly run on one pc what i need is to run this project on local netwrok , how i can do this and how i can edit the connection string and make .exe file ???? Help me plz

Hi all, How can I change the BACKGROUND color of the MDI FORM in C#? I changed it using the background color property but the color is not changed. What should I do to perform this task? Please help me out!! Thanks in advance!!

Hi every body, i want to get a data from List<T> so; class Npc : IDisposable { public short id; public float fX; public float fZ; public float fY; } internal List<Npc> m_arNpcArray = new List<Npc>(); I want to get data like this; m_arNpcArray.GetData(int id); GetData() { for(int i = …

Hi, I've been learning c++ for a few months on a windows os. (Not using the API) And im building a new computer soon. I will install Backtrack at first, then win if I need it. My goal is to become a professional developer (I will most likely write code …

I have datagridview with 12 columns from which last 3 columns are comboboxcolumn and I have to get value of those 3 columns to update database.I have witten below code on cellvaluechanged event: Dim rcount As Integer = dgvUserDetails.Rows.Count For Each row As DataGridViewRow In dgvUserDetails.Rows If Not row.IsNewRow Then …

Hi Everyone I want to make my code run from command prompt I am using window 7 and JDK 6 Following are steps I did: 1) Created a Text file Example.txt. Changed the file extension to Example.java and placed it under C:\myWork 2) Open command prompt type 'dir' to see …

Hello, how can copy and save the console message to a file using logger. i try this :[Click Here](https://friendpaste.com/6FWNg0QIzY7DoPXisOyqpv) but it's only saving warning and info messages to my file. thank you

So i have looked in this forum and grabbed a piece of code that let me encrypt text using a cypher. I have changed it so that you can input your own text to be encrypted and a little more. I am 15 and this is my 2nd day learning …

I recently bought this book online used, it came with no CD. Many of the code examples in this book rely on some file called IO.h that apparently came with the CD. I downloaded this file and I still get many errors. Does anyone have these files, or do I …

Dear Experts, I have one simple question , and forgive me , I know it is simple , but I am very bad in regular expression. I have a text which represent time interval , eg [1-5] , ie , the start time is at 1 and ends at 5 …

Hello. I have been having trouble with this pygame program. I am trying to imitate a wind turbine. However, when I run the command, it returns with a blank black screen with a square. What is wrong?? Here's the program: import pygame ############################################# # Written by P****** ******* and V***** …

## **sorting (array) c++ who user can enter numbers from output.** ## #include <iostream> using namespace std; void enternumber (int *array, int N); void bubblesort (int *array, int N, int Order); void selectionsort (int *array, int N, int Order); void insertionsort (int *array, int N, int Order); void quicksort (int …

i have problem in convert infix to postfix some expression evaluate it correctly and other no ex: c\*(a+b) evaluate it correctly but A\*(B\*C+D)+E doesn't evaluate correctly and there is another problem in finding result my code // convert.h const char SIZE=100; class stack { public: stack(); bool isempty()const; bool isfull()const; …

Hi there, My problem involves reading in and working with an excel file that contains blank cells randomly throughout the spreadsheet. The reason there are blank cells is because I have expression data for various cell types but for some of the cell types the expression data was not available. …

So I have a YML file, and I'm trying to convert it to a different format. I found a YML format converter script and edited it to the best of my ability, and this is what I've come up with: #!/bin/python try: import yaml except: print "Failed to import module: …

Why This error is coming................... There is already an open datareader is associated with this command which must be closed Private Sub AppendItem(ByVal Productid As String, ByVal quantity As Integer) productid1 = Productid myConnection = New SqlConnection(connectionstring) myConnection.Open() Dim TempData As New DataTable Dim pid As String = ComboBox1.SelectedItem myCommand1 …

I tried [CODE]If (checkedListBox1.SelectedItem.ToString() == "Others") { //do something }[/CODE] but it's not working the way I wanted to.. Whenever the 'Others' item is checked, the code executes but if I tried to uncheck it, it still execute the code as if it runs when that item is selected checked …

Dear members, In a previous post I got useful tips to study C++ for game programming. I was using bloodshed Dev c++, but it had too many bugs. Now I use visual studio express 2010. But I can't get along with it. In bloodshed you had a blanco "page" and …

Dear Friends, i need the code for Digital Clock using 8086 in assembly language.. please help me.. i know nothing about assembly.. Please help me somebody i have found a code but its not working properly. please let me know if you want to explain the code, i'll provide it.. …

hello, this is my code and for some reason it does not work :/ could someone tell me whats going wrong? ;sum of all powers of 2 lower or equal to 2^n ;example n=4 => 2+4+8+16=30 .386 .model flat, stdcall option casemap: none include \masm32\include\windows.inc include \masm32\include\masm32.inc include \masm32\include\kernel32.inc includelib …

I'm confuse ..... What do I really need to install in order to use the API for bluetooth? I'm going to develope a wireless mobile application that can communicate with my laptop....

There must be a better way of writing the following code, I would really appreciate your suggestions and coding. I am new with python. Thanks. A1 = os.path.join(pathname, "x") A2 = os.path.join(pathname, "x", "y") A3 = os.path.join(pathname, "x", "y", "z1") A4 = os.path.join(pathname, "x", "y", "z2") createPath(A1) createPath(A2) createPath(A3) createPath(A4)

Hi! I have a super class called character, subclass player. when i compile, i get this error: constructor Room in class Room cannot be applied to given types; from this bit of code in Character: public Character(Room room, String name) this.name=name; currentRoom = room; Room currentRoom = new Room(); // …

Hello, I'm doing some word counts in Perl and have a problem with the following one. I want to use two subroutines count and show and do a word count on two lines of an array at the same time I've got two problems with it. 1) when using print …

i need c++ code for simple linked list to implement algorith and data structure 1.create_node_and add to list 2.frst node delete 3.last node delete 4.delete node between first and last node 5. displaye the value of node in revese order 6. searching 7.exist

Does any buddy tell me use of asterik in C++ ?? And also explain use of static in methods and in constructors. Actually I am search a code that dynamically creates an object of class. Anyone please help ! class BoxFactory { public: static Box *newBox(const std::string &description) //expalin this …

This may be a long post but I really need to know how to Convert between the two image formats and amonst themselves as well. Here goes: I have a struct like the one below that holds all pixel information: typedef union RGB { uint32_t Color; struct { unsigned char …

Dear members I'm wondering about what would be a good book to study C++ game programming. I have a pdf of Beginning C++ game programming by Michael Dawson. Now I want to buy one, but I don't know if there is an better one than this one. Kareem Klas

**i have consumed a webservice (shown below) from webservicex.net into my client C#.NET application but it is returning this whole bunch of XML. Please, how do i get values of only <wind> and <temperature> elements into my application's textbox? Thanks** <string><?xml version="1.0" encoding="utf-16"?> <CurrentWeather> <Location>Madrid / Cuatro Vientos, Spain (LEVS) …

What is the Python (2.7) equivalent of the PHP $_POST, $_GET, $_SESSION and $_COOKIE, and how are they used ? After almost 2 years of trying I have finally gotten Python to work on my WAMP server - only to find that it is severely lacking in web page functionality.

I have a simple html webpage currently implemented, and my Firefox web console has the following complaint about it when loaded remotely: [13:08:03.588] The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from …

Hi, I am working on the World of Zuul. I am adding the take item command, when I envoke it, the output prints twice! The main class is Game, this is the take method. public void takeItem(Command command) ( if (!command.hasSecondWord())( // if there is no second word, we dont …

Why do some people put main(int argc, char ** argv) not main() ? What's the difference? When is it needed? Thanks in advance, Tom.

I'd like to create a video from a series of images in my MFC application. Is there an API or example source code which would get me started? I imagine I'd create an MP4 or AVI file. (A sub question: I've heard that Windows 7 includes the MP4 H.264 encode …

i am a computer science students and one of our project this christmas vacation is to create c++ programs and we will submit it on the 3rd of january but i dont have idea where can i find it anyone please could help me thanks...

Hi, I'm really interested in things like image recognition and certain other aspects that Artificial Neural Networks perform really well at and I'm hoping to do a personal project with ANNs in the future. The problem however is that my knowledge of them isn't that elaborate at the moment. All …

Hello I can't understand why 1st cin for Enter Name is skipped out of 3 cin statements in getData function in Teachers class other 2 cin statements are accepting input- Here is code - #include <iostream.h> #include <stdio.h> #include <conio.h> #include <string.h> class Teachers { private: char staff[20]; char post[20]; …

when i run my code in emu8086 i have error "opcode not supported yet" so what should i do in this case and pls try to run in emu8086 to check if it work properly or not cause i spent alot of time to fix the code but i couldnt …

Hello I am trying to pass a array of object to a member function of that class but not successfull. I gone throgh lots of article and document also follow this thread in Daniweb [Click Here](http://www.daniweb.com/software-development/cpp/threads/2771/passing-arrays-of-objects-to-functions) This thread is good to understand how to pass an array of object to …

Hi all! I am making a program to input a paragraph from the user and then finds/swap/delete/insert a word in that paragraph. I am stuck on the first stage. I have made a program that just returns the starting index of the searched word. But its case sensitive and i …