Software Development Forum

hi, im currently revising linked lists for my exams - but i cant quite understand the reasoning behind using current or current.next in the following examples in the example below we are adding to the back of a linked list [CODE]void addToBack(int value) { // make a new element Element …

Hi, are there some libraries i can use (in MS windows) for stuff like, obtaining info from a website? i read something about sockets once, but im not sure what it is (yes, i googled it :) ) Or would be easier/better, as some suggest, to learn java or python? …

I am reading a .Csv file and am having problems trying to get the information I want, set up the way I want. Here is where my problem comes in: [code] String[] info = beanInfo.split("," , 3); for (String str : info) { ip = info[0]; hostname = info[1]; ping …

I am new to c++ but have been using java for a while now. I am using Microsoft Visual c++ and when I try to build it I get the following error: Linking... Airline Project.obj : error LNK2019: unresolved external symbol "public: __thiscall FlightManager::FlightManager(void)" (??0FlightManager@@QAE@XZ) referenced in function _wmain F:\Documents\Assignments\CA212\Airline …

Hi All, can any of u explain the order of constructors ,how it will behaves when order of derived classes as like present in attachment

Hi Folks, I have a textbox which looks out for keypresses when it is in focus. For example, when the ";" key is pressed, a few functions are called. THe problem is, is that in the KeyPress function for the textbox, i have textbox1.Text = ""; to clear it however …

I try to program DirectX in Visual C++ 2008. I need at least a win32 working window. I have a BIG problem compiling win32. First, I created a win32 project (a simple Win32 Project - not empty). I don’t modify any code compile when compiler says: Cannot find windows.h. So …

I have a combobox that has state abbreviations. It is filled from a dataset table, which is read in from an xml file. The combo box populates just fine. I want the selected value and text to change when I load a record from an accounts table in the dataset. …

I've got this strange problem, I created an instance called structure, I made a function which return an object of this type. Just before returning, I print it, it gives me the right object. Now when I collect it in 'main' and print it, it becomes 'None'. If someone can …

So, I am supposed to be encoding and decoding hidden messages in images. I have perfect the decoding hidden messages part, but am a bit stuck on the encoding part (encoding a message by changing the red value in the pixel color to the unicode number of the letter. I …

i am trying to code a toString() method which returns the string "Power: ON" if the power variable is equal to true and "Power: Off" if the power variable is equal to false (the power variable is the boolean type). However i dont know how to do this as the …

Hi, I am trying to invoke a shell script from python. This shell script while running expects user inputs based on which it proceeds to perform several actions. I want to automate the process of sending the user inputs(may be from a file) I am using the subprocess Popen class …

I am having an issue with a project due. I am missing something? can you please help? here are the instructions and what i have so far. The final project will consist of three files called, Shape.py, Circle.py, and Square.py. I’ve written a test file you can use to see …

I have a list of directories named dirList. I need to filter and sort before I pickle I think. This is what I've got. [code] fileHandle = open( 'dirList.txt', 'w' ) fileHandle.write( 'yadda yadda yadda intro' ) cPickle.dump(mu1List, fileHandle) fileHandle.close() [/code] the mu1List is declared at the beginning and it …

This technically isn't fully a Python-related question, but I couldn't find a better place to post it than here. I'm just curious about how to get/update weather information from the internet... like say that sidebar gadget in Vista that updates the weather and temperature from some online-source. The problem is, …

Hello, i have to design and implement an application that helps a museum analyze the flow of visitors for an exhibition that lasts for 3 weeks.(The museum is opened 7 days a week for 4 hours)...well getting to the point. I need to store this information in a 3d array …

[COLOR="Green"]Hello Programmers[/COLOR] This Is My Question & the answer But .. The out put not exist i don't know what is the wrong with it [COLOR="Red"]Write a program that will take as an input 5 Capital Letters and then display on next line in small letters and in reverse order. …

hi all ..i need help plz ...where can i find a java code(not Javascript) for an image slide show ...made in GUI ...if someone knows ..plz help ..and thnx in advance

I'm trying to get a dirList.txt file in 2 different directories to (eventually) compare them. I've got a basic start going [code] # A program to create and compare directory lists of # a music folder and its backup import os, cPickle, string, stat, fnmatch # Define variables for the …

hello frendz.. im working on a small application wher i need to copy the data from excel sheet and paste it to the text file.im trying to create a macro for tht. the selected row should be in a specific format. like if ther r 3 colums then the text …

hi.. im writing a macro in Excel to copy a selected roe into a text file. i ve taken a button on a sheet and when user clicks on the button the selected row (only selected row) should b copied into a file on c: seperated with ","... ive written …

I have written (mostly) with some take from a simple tutorial a calculator control for a program I am working on, the control works fine, except i would like the control to accept key input, like the windows calculator does, i.e. asterisk activates multiplication, enter evaluates and the numbers are …

I am reading a .txt file line by line and when the line in the file is "Hello1", I want to Replace that Line with "Hello2" but I dont get that to work. I think I miss something out here [code] //Save this emailadress to the RouletteDataBase file String Path …

I was looking at this: [url]http://www.parashift.com/c++-faq-lite/ctors.html#faq-10.18[/url] I don't understand [code] File f = OpenFile("foo.txt"); [/code] It seems like File is one class, and OpenFile is a separate class, so how can you assign an OpenFile to a File? Also, is it necessary to have this second class? Why not something …

hi i have a very large array that i want to populate but i don want to run the for loops every time so i thought i would right a program to output text to fill the array and was wondering if this would work. the array is [icode] int …

Hi all, New to the forum here, and coding in general. I am posting because I am having a problem with a simple program intended to act as a word, character and line counter, with each counter being its own function. I keep running into the same problem over and …

im having a problem getting an abstract method to work, heres the code [CODE] abstract ImageIcon getPicture(); { return picture; } [/CODE] When i compile the code i get the following error: Appliance.java:30: return outside method return picture; Can anyone help me fix this?

Hi all! I need to check if an object with equal property value(CustomObject.Key) exist in my custom list In a List(Of String) i would do it like this [code=VB.NET] Public Class StringList Inherits List(Of String) Public Overloads Sub Add(ByVal s As String) If Not Me.Contains(s) Then MyBase.Add(s) End If End …

After much frustration of trying to figure it out on my own, I am finally ready to admit that I need help. Does anyone know how to compile allegro 5? (or better yet have a precompiled version I could get my hands on) I have tried many tutorials and none …

To redirect clog, I have been using this: [code] std::streambuf* clog_save; std::ofstream ofs; clog_save = std::clog.rdbuf(); ofs.open(LogFilename.c_str()); std::clog.rdbuf(ofs.rdbuf()); cout << "Test cout." << endl; std::clog << "Test log." << endl; std::clog.rdbuf(clog_save); ofs.close(); [/code] However, it seems like bad "code reuse" practice to have to put this in every program I …

Hello, I need some help understanding the nonlocal variables and functions. Currently I'm reading "A byte of Python" to ease myself into the language, which so far seems to be fairly straightforward even if the syntax is a little strange coming from C++. I have copied a small script from …

Hey... ok before i start i want to say that i'm not a very good programmer... and i'm new with this... and i got a project that i have to submit in 2 days so i badly need help!! ok the problem is: I'm using binary file handling, a code …

Hi folks, I am currently making a piece of software in c# which uses a very large .dbf (yuk!) database (about 120MB). I have a "Remote" class which is used to do the database operations. I use ODBC to connect to this database. All works, except that due to the …

I'm trying to write a short bit of C code that will get a filename from the user, via the keyboard, and open the specified file, but I haven't been able to get fopen() to recognize the variable filename when I use fgets() to get it. Here's a snippet of …

how im gonna loop menu if option not 1 or 2 ??? [CODE]void display( ) { int option; system("cls"); //clear screen cout<<endl<<endl; cout<<"\t * Display Menu *\n"; cout<<"\n\t1. Display For Certein Date"<<endl; cout<<"\t2. Display All Appointments"<<endl; cout<<"\nEnter Option Number: "; //Enter option cin>>option; cin.get(); switch ( option ) { case …

As i have written Atoi(); Now i have written Itoa. Here I have used a method of getting the last digit stroring it in an array and then reversing the array to get the required answer. I look forward for Improvements in this code. [CODE=C++] /**************************************************************************** Function Name:: itoa(int ,char …

can anybody tell me why i am getting error object variable or with block variable not set .here is the code what i have written. any help would be greately appreciated. [code] Public Sub Addtolistview() 'Dim success As Boolean DataPath = GetSetting(Application.Name, "BasicSetup", "Database", "") 'StrQuotationStartID = GetSetting(Application.Name, "BasicSetup", "QuotationStartID", …

How can I clone an object in C++, so it is a seperate object, but exactly the same as the original? Thanks, - Moshe

i want to make a prgoram that will read in a set of numbers and determine whether or not they are prime numbers, this is what i got so far any ideas? [code] #include <iostream> #include <queue> #include <vector> using namespace std; int main() { queue <int> input; queue <int> …

Hi I am writing a function which gets values. These ones will be used in my sqlite query [code] def updateDB(tel, month, price): mytel = (tel,) myprice = (price,) connection = sqlite.connect("mydb.db") cursor = connection.cursor() sql = 'UPDATE mydatabase SET %s = ? WHERE number = ?' cursor.execute( sql % …

I need some help. I have been problems getting my programs to recognize variables outside of the subroutines even if I make them public. Ive been able to work around the problem until now. I am working with arrays. It wont let me declare the array outside the subroutine and …

Hello, I have a program called Date. While this program compiles and runs, I have noticed something weird. I have an output line that displays my values twice. Sample Run: The word date output is: February 12 2009 [B]The numeric output of the date is: 2/12/2009 The next incremented date …

If I have a list of 5 random integers, is there a simple way to iterate through the list and see how many of each number there are without using 25 if/elif statements. For example my list might contain [3, 7, 10, 10, 14]. How would I determine that there …

i was wondering, is their any way to do something, say msgbox, when an exe is ended via the end process in the task manager? thanks in advance!

Hello again all!!! I just have two quick questions... 1.) Is it possible for one to run a program through the "system(command)" and have the output come out on top of an SDL program? Like if I had a background of some sort and typed "system(echo "Hello!")" could I have …

I am trying to order a list containing integers. I want them sorted in numerical order from lowest to highest. I tried using sort but got the list baxk exactly as it was. [code=python] x = [5, 3, 7] x.sort print x [/CODE] What command would I usr to make …

i want to see all the function calls from the very first to the very last one. is that possible? i tried call stack window but it shows the ones in the scope of the break point.

Ok, i have read alot about this bugs now, and nothing seems to help. Hope someone have a step by step solution for me, or atleast can give me some more insight hehe ;) Here is a few intel on my work. Im working in netbeans on my labtop, uploading …

I have two methods. One method was to set location of 2 points x and y. Another method was to copy that location. I used arrays. Well the program compiles but it doesn't display my values properly. Error message says: [D@af9e22. Does anyone know what this is? Thank you // …

I have a form with a readonly textbox, some layoutpanels with some buttons in it and together they make up a calculator. (Yes I know this is YAC (yet another...)) but I have fun while still learning! When I click the buttons and manipulate the Text property of the textbox, …