Software Development Forum

So the other day I was just experamenting with some code, just for fun, and I ran into some difficulties. So I suppose my question is why the following code does not write to the original bigints array. I am sure I am doing something dumb, but please bear with …

Hey guys i need some help.. Here is my code given below + the question statement.. The problem is simple i just wanted to ask what and how i can use variable to calculate average in array questions.. Problem Statement: "Write a program that declares an array of 25 integers …

hi ^_^ I want to write a code to set an (error) text in the Jtextfiled if the number contains more than 1 dot (eventHandling)! but my code actually didn't concatinate with the next digits I've enterded ,for example:(2. ) and stop ! so what is the right solution ?!! …

I am creating a doubly linked list and printing a backwards function. Everything is working great in my code, but when the function is printed in reverse, I need it to say NULL at the end, as it does going forward. When I put puts("NULL") (line 193) it splits up …

hi people how do I select a specific row in a data grid view to be updated. the row contains item number, item name and price. thanks

As the title implies, what I want to do is create main.py and have it open a window. after the window is open, I want to edit main.py, and when finished editing, hit File -> Reload in the window's menu bar. what's expected is for the window to update with …

hi everyone :) I have a problem here >>which I can't add 2 numbers >> and I don't know what is the solution for that !!>>it always gives me an empty result !and that is because (num2) always parse a (null) value ! so how can I edit the value …

I'm writing a program tha calculates linear regression, one of the values that are generated is the r (linear correlation coefficient) value. However, my algorithm doesnt work. I implemented the r value from the formula located at [Click Here](http://mathbits.com/MathBits/TISection/Statistics2/correlation.htm) Here is my code: long double LinearRegression::calculate_r() { long double r; …

Hello I need some help. I'm trying to opening a file and sorting then displaying the results in a listbox. When I run the program I get the error "Index (zero based) must be greater thatn or equal to zero and less that the size of the argument list" Here …

Hi, I have a dgv displaying records from an SQL database. On load, the dgv is filled, the dgv selection cleared and the 'action' buttons set to enabled=false. When the user selects a row (cellclick action) the 'action' buttons are enabled. When the action button is clicked the dgv is …

Hello Guys, Simlple problem and I am hoping for a simple solution! My software saves all my randomly generated product keys to a text file. It saves this using the code below. My.Computer.FileSystem.WriteAllText(My.Computer.FileSystem.SpecialDirectories.MyDocuments & "\TempValuesForAKG.txt", PTB.Text, True) That works fine. I then try to use the Print Document control and …

Hello Guys, Am having a new assignment and a new problem. I should make C# application witch shows drive letters in combo box, directories and only .txt files in tree view, and I should be able to open text file from tree view in text box using Open button. I …

In python if I know the volume label of a USB mass storage device is there a way to get its. Drive letter Windows Mount Point Linux Mount Point OSX Originally I was thinking either the sys library or the os library. i ahve found another library called PYUSB. Still …

Code: Form2 ConfigForm = new Form2(); ConfigForm.Width = 300; ConfigForm.Height = 148; ConfigForm.ShowDialog(); What I get is http://s3.postimg.org/hyiqmmacj/Test_App2.jpg Which is totally wrong size. What it's like in designer, and what shows if I just use ConfigForm.Show() is. http://s3.postimg.org/x5yq6z277/Test_App1.jpg Does anyone know why this ocurrs, and how to fix it? Thanks …

I have a GUI with two JSpinner's and a Spinner Model attached to each of them. When changing one value, the other changes. I suspect this is because I'm using the same model. This is obviously not what I intend to do, is there a better way than creating another …

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Hi! Straight to the problem: I'm building this server application which will monitor SQL databases. I want it to remember any number of connections so I've made a few methods which I thought would do the trick, except they don't. The program should add any new SQL connection to a …

Hi Daniweb, My project was to create a basic shell. One of the features being if we enter a command and input a path to an executable, CreateProcess is invoked to start the process. This works fine enough for console applications: the process starts, runs, and then terminates, upon which …

I was trying to learn how to add and use User settings and Application settings. And somehow I've managed to create some kind of double setting. Here is my app.config file. <?xml version="1.0" encoding="utf-8" ?> <configuration> <configSections> <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a6c561934e089" > <section name="TestApp.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, …

Hi, Im slightly stuck with a java project ive been asked to do. The problem is the game is a simon game so I the computer picks a letter randomly and the player has to copy it, if the player picks the wrong letter in the sequence the game informs …

i am working on an infix to postfix project and have reached a troubling point. one by one i must extract a string token from the string being inputted to the method infixtopostfix and one by one input them to the front of the deque named postfix. i dont understand …

How can I sum only the first and the last item in an array list? ex.: list = (300, 450, 150, 800, ...)

I'm getting an excel range to an array. From my search it was clear I need to use object array. object[,] saRet; oRng = oSheet.UsedRange; saRet = (System.Object[,])oRng.get_Value(Type.Missing); This works fine, but what I really need is for that array to be string. So how might I cast object[,] to …

Hi guys, I am a new member to the group. I am trying to build an inventory management application using VB.net 2008 express edtion and MS access 2007. I have managed to load the Combo box (cmID) on form(frmSales) with product Ids from tblProducts. I have two textboxes on the …

So, I've written a Custom Binary Format outline but I'm not sure how to translate it to code. I was looking for a few tips on where to get started? Here's my outline. MAPDATA { signature // U24 0x4D, 0x41, 0x50 (MAP) version // U8 0x01 width // U16 (MAX …

This is a homework problem; however I just want some direction. I have to write a module graph.cpp that implements djikstra's algorithm. so far i am at the reading in module and am trying to make an array of structures. here is the code. [code=c] // Zachary Dain // CSCI …

Hi, Guys. I'm calculating the correlation coefficient between two HashMaps of Stock Prices keyed on Dates. However, the Dates do not always line up perfectly. So, I need to line-up the two HashMaps by their Keys. Thus far, I'm creating two ArrayLists of the Dates, doing retainAll between them and …

I have class within class public class List { public int RecordCount { get; set; } public IEnumerable<ServiceElementItem> ServiceElement { get; set; } } public class ServiceElementItem { public int ServiceElementId { get; set; } public string ServiceElementBusinessId { get; set; } public string Description { get; set; } public …

Here is my RegEx declaration. private Regex rxPattern = new Regex("^(book-[a-z]{1}\z)"); I'm expecting it to match start of string "^" To end of string "\z" But the "z" is causing the error. I'm fairly new to RegEx and cannot find a solution, if anyone can educate me a little that …

Hello Everyone Please share any complete example on protocol buffer with Java.I also need instruction to compile java code which use these protocol buffer (protobuf).

For my own use, I'd like to develop a small Vector and a Matrix class, independent of some big libraries that exist out there. My question is: Should Vector and Matrix stay two independent entities or should I derive a Vctor frm a Matrix or a Matrix from a Vector? …

Hello, I am trying to compare a double to be within various ranges, but the comparison is not working correctly. Rounding precision is not a concern, because if the value will match the boundaries so rarely, and it is rounding up to the higher range is acceptable. Below is the …

I have a function that counts the commas in each item of an array of string. public int CommaCount(string[] sarray) { int count = 0; int commas = 0; for (int i = 0; i < sarray.Length; i++) { commas = sarray[i].Count(c => c == ','); if (commas > count) …

Hi guys, I am trying to write a program which picks the closest number possible out of a dictionary. The dictionary contains 50 doubles values, and I use a random double to pick the number i want to get the closest to if that makes sense. Currently I am using …

C++ Programming Exercise: Implement a command-line calculator that allows the user to enter an expression containing numbers, variables, brackets, and operators. The calculator will also allow assignments to a variable. After the user enters the expression the program will evaluate it and display the value. If the expression is part …

Hello im a total noob in java, im learning game development, i made this game and when i thought i was finish i tested in another android with a smaller screen and puf all the game was ugly. I started rezing evrything by screen width, example batch.draw(position.x, position.y,Gdx.graphics.getWidth()/7, Gdx.graphics.getWidth()/7 ); …

How do I read a .txt/.csv file from an internet address? For example: http:\\[url]www.internetaddress.com\file.txt[/url] I don't think file() would work for this. Thanks

how to fix [DBNETLIB] ConnectionOpen(Connect()).]SQL server http://i.gyazo.com/3e7e693141fd157da860907218fbb1a0.png this is UID and password of my SQL server I try to insert but this is the problem I get http://i.gyazo.com/c903e03c7d697b7b8c2c80933e99e376.png and this is at my other pc so had to make pics with my phone. any idea how to fix this?

hey guys i was solving a question but there is something which is not working properly.. I'll provide you guys with question statement and my code below.The problem is occuring after the loop like if the avg is more then 0 still it shows the output massege as "terminating". Can …

Hi, how to avoid the WebBrowser in Vb.net to go at specific website, then return to specific link Here the code I try, but got an error,expression does not produce value Here the code Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load If WebBrowser1.Navigate("http://www.youtube.com") Then WebBrowser1.Navigate("http://www.google.com") …

Here is the code for [B][COLOR="Red"]Insertion Sort, Bubble Sort and Selection Sort[/COLOR][/B] [B]Insertion Sort[/B] [CODE] #include <stdio.h> main() { int i,j,key; int a[5]={5,2,3,4,1}; for(i=1;i<5;i++) { key=a[i]; while(i>0 && a[i-1]>key) { j=a[i]; a[i]=a[i-1]; a[i-1]=j; --i; } } int k; for(k=0;k<5;k++) {printf("%d ", a[k]);} printf("\n"); } [/CODE] [B]Bubble Sort[/B] [CODE] #include <stdio.h> …

Hi Dw. I'm creating a multi-client/server program. I have developed both client and server the server will connect up to 3 clients simultaneously and each client may send an action request to a server at anytime and the server should be able to reply to only that particular client, at …

Hey guys, I just learned the very basics of arrays and I have to write this program of a tic-tac-toe game. The requirements are this: Write a modular program that allows two players to play a game of tic-tac-toe. Use a two-dimensional char array with 3 rows and 3 columns …

hi everyone , i have worked on this 2 days now and cant find my mistakes , the program runs but it stops ( waiting ) after i enter 3 or 4 . can anyone help me where are my mistakes please? thanks allot. the program should do the following …

hi, soat the moment i am writing an encryption program, i am not quite sure how to use for loops for lists, my list at the moment is this: **Somewhere in la Mancha, in a place whose name I do not care to remember, a gentleman lived not long ago, …

Which tool for code analysis is the best for complex C programs? I use GCC debugger with Code Blocks 13.12 Thanks for replies.

Hey there, whoever whose reading this, I'd like to know how to obtain the coordiantes when a user clicks the form **in relation to the form**, meaning if the top left hand corner of the window is clicked, it should be x=0, y=0... I should think this is an easy …

I have a system named library system and all works properly but not in borrowing i can search the books i want to borrow but when i input my member_ID i encountered runtime error which says " No value given for one or more required parameters" but i have filled …

Is there anyone who can start discussion on "naive bayes classifier"

Hi guys, I would like to discuss my design with one query. below is the code snippet. It is clear from below code snippet that class pd is privately derived from AbstractClass as both are different classes and there is no relation between them.Now in my class pd i need …