Software Development Forum

I want to know how this function is working. I used qsort() function to sort the integers in an array and i found this compare() function on internet. It worked perfectly well but i cannot understand how is it working and what's its logic. Any help? int compare (const void …

Hi am very much interested in progrmming with java and my idea is developing a project that can solve linear programming problems for minmisation and maximisation.

Hi, I have a problem of modifying Jtree font. No matter what I do or make changes in code I'm unable to change the default font. I got the TreeCellRenderer code from some website. Any suggesion on font change would be really helpful class MyCellRenderer extends JEditorPane implements TreeCellRenderer { …

Hellow...How to count and sum even and odd integers from a sequence of integers..?

I am trying to write a code that directs the user to a specific sheet in the workbook depending on a yes or no answer. So basically there is information that will need to be completed and the information is specific to whether it is a YES or NO. So …

please how do i code a search button in visual basic. my database is microsoft access and i am using a binding source to connect to the database.

I know how to change the background color of a button or label in properties, but I need help figuring out how to get it to change when it is clicked.

I'm just a beginner please help! BlueJ accepts my code - there are no compilation errors. But when i want to run the program it doesnt do what i wanted it to. It allows the user to answer the questions about the product and price but the skips to the …

I'm creating a simple FTP client and i want this certain label to say "List refershed" after a certain action and then after 2 seconds i want the label to say "STATUS". How can i do this?

I created tab pages with this, cmd.CommandText = "Select * from StuInfo where StuID ='" & SelectedID & "' order by PayDateDB desc" cmd.Parameters.AddWithValue("@StuID ", SelectedID) DA.SelectCommand = cmd DA.Fill(DS) DT = DS.Tables(0) RecCount = DT.Rows.Count TabControl1.TabPages.Clear() If RecCount > 0 Then For Each DR In DT.Rows newPage = New …

[LIST=1] [/LIST]Hello again :), I am writing a code that will recursively write a string in reverse. The problem is in my recursiveReverse function. I feel like the idea is right, but the implementation is incorrect. My thought process was that I could start the loops at the beginning and …

codding for login form in v.b

I am trying to enter user name and password from command line. user name is 'example@gmail.com' and password is 'Example$319'.....When I am printing this values I can see the password is wrong. I am typing Example$319 but it is printing 'Example19'. $ and 3 are discarded.....Please help me what is …

Hi, I have created a Form C# application that has alot of code inside. Runs on QuadCore processor. The problem consumes about 2-5% CPU in general when looking in TaskManager. **Problem:** At some point the application consumes about 60-70% and stucks there forever. So I am very sure that somewhere …

I know that you can call this method to delete a row from a JTable: [Code] DefaultTableModel.deleteRow(index); [/Code] I need to delete all of the rows at some point, and this is not working: [Code] for (int i=0; i<dtm.getRowCount(); i++) { dtm.removeRow(i); mortgageTable.revalidate(); } [/Code] I tried revalidating, but that …

Hi! I am using crystal report to make my report. But problem is that I cant use same SQL Command there in report parameter because its different. I am going to show you my code so that you can understand it. I have a report & a form where I …

import gpdraw.*; public class chemical { public static void main(String args[]) { DrawingTool pencil=new DrawingTool(new SketchPad(700, 700)); double points[][]=new double[4][3]; double theta=0; double vx=0, vy=0, vz=2; while(true) { points[0][0]=0;//x points[0][1]=1;//y points[0][2]=0;//z points[1][0]=.94281*Math.cos(theta); points[1][1]=-1/3; points[1][2]=.94281*Math.sin(theta); points[2][0]=.94281*Math.cos(theta+2.09439); points[2][1]=-1/3; points[2][2]=.94281*Math.sin(theta+2.09439); points[3][0]=.94281*Math.cos(theta+4.18879); points[3][1]=-1/3; points[3][2]=.94281*Math.sin(theta+4.18879); double screenx, screeny; for(int i=0; i<4; i++) { double x, …

I am trying to read user input from console using Scanner but it only reads my first input, and then on my second input it closes my program. Here is my code: import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.security.KeyPair; import java.security.KeyPairGenerator; …

This is a code for removing spaces from a string, I've been asked to do this without using any standard library functions like `isspace` or `'\b'`. I've been trying for a lot of time but it always gives the same error > Error : Cannot convert 'char' to "char *" …

Is anyone familiar with the CPUSIM 3.6.9 Wombat Machine 1.1 ? I need help on how to make a loop with machine language.

Hi. Our homework is to use try...catch block in our calculator applet. I don't understand why the "catch" does not work. It will always go straight to the "finally". Here's the code: import java.applet.*; import java.awt.*; import java.awt.event.*; import java.awt.Label; import javax.swing.*; public class clsCalculator extends Applet implements ActionListener { …

i have this class theclass{ int totalavailable; other informations; } and i made a list LinkedList<theclass> where all available rooms The user want to see if two rooms of any of the available rooms that are at the list are availables and produce a result with the available options. for …

hi everyone does anybody know a good java free ebook. if anybody has it plz send it to me or give me the link. or any sort of programming ebook would do. thanx :cheesy:

Is there any way I can execute a block of code in a loop, like so: [ some code goes here ] Where the delimiters are "[" and "]", and also allowing for nested blocks, i.e.: [the user can create another loop[]] I am creating a parser for a language …

I do c language "httpd" application works without problems at first. 1. meet user requests from nginx ago 2. Looking to requests from. Directs incoming requests according to the address 127.0.0.1:8080 But how can I solve the query is loaded when the crash occurred. #include <stdio.h> #include <stdlib.h> #include <string.h> …

PROBLEM DESCRIPTION A battalion is a military unit with 300 to 1200 soldiers usually consisting of seven companies commanded either by a lieutenant colonel or a colonel. A particular training that a battalion undergoes is the training to maximize the battalion's "carrying capacity" whenever they are to carry cargoes from …

Hi all In my window form project I want to display only 2 columns among 3 columns Of my BRAND datatable in LISTVIEW column 1 BRANID display in listview 2 BRANDNAME display in listview 3 ID don't want to display in listview all brand & it's id display in listview …

Write a program to read the coefficients of a series of quadratic equations from a text file and print the associated roots, or appropriate errors if there are no real roots, to another text file. The coefficients of a quadratic are the a, b and c of an expression of …

Hi, Everyone, Is it possible for the autocomplete feature of textbox to show only when I type the @ sign? I have a list of common email address domain, I just want an autocomplete feature that when the user type the @ sign the autocomplete will show and suggest. Thanks …

class name { char *s; int len; public: name(){ // Default constr. s=NULL; len =0; } //************************************************** ~name(){ // Destruct. if (s!=NULL){ delete [] s; s=NULL; } } //************************************************* name(const char * s1); // Constr. char* getName(); //fcn get name int getLen() ; // fcn get lenght void setName(const char …

Hello, I have been researching the minimax algorithm for a few days, but I can't apply it properly. I have read that for the 8 lines in Tic Tac Toe, you give certain scores. However, I don't understand what they are trying to tell me. Could I have a simple …

Hey! I am learning a bit of jframe, and I was wondering if anyone knew how to make a JScrollPane display an RSS Feed? I have the feed already, I just need to know how to have the JScrollPane display it, thank you!

Hi there, I like programing very much. Fortunately or unfortunately my sujects in collage was arts, because i hate maths. Visual basic is my favourite language. I have learned it partially. But it didn't support my native language. I need some menu button text in my native language, but it …

def mu_cache(func,maxsize=128): "Most Used Cache decorator" cname = "__"+func.__name__+"_Cache" rname = "__"+func.__name__+"_Rankings" exec("global "+cname) exec(cname+" = {}") #here exec("global "+rname) exec(rname+" = {}") def wrap(*args,**kwargs): cache = eval(cname) rankings = eval(rname) try: res = cache[(args,kwargs)] except: res = func(*args,**kwargs) cache[(args,kwargs)] = res else: try: res = rname[(args,kwargs)] except: res=0 rname[(args,kwargs)] …

hi i want to show my 2nd form then close the 1st form. here's that simple codes and i can't do it right. please help Private Sub btlogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btlogin.Click form2.show() me.close() End Sub

Hi there, so I have a project idea for Java but I have no idea how to start it and was hoping that some of you could point me in the right direction. So I got this idea based on a need that my mom had in her business. I …

probably doing something fundamentally wrong , but im used to the luxury of java's `System.currentTimeMillis()` or `System.nanoTime()` unfortunately. i have a code that i posted before for a different problem (couldnt compile properly in pelles C) , but now , although its compiling well and good , my clock outputs …

please give me the details about making a thesis for mtech and also most relevant topics in computer science.

pls,i need to make my program executable

Hi, I was wondering how I could create a MUD (Multi-User-Dungeon) game using Python. It would be a dream come true if I could make one on my own so I was wondering if there is any reading material (pdf) that could teach me. What functions and commands would I …

I'm working on a project that generates roughly between 13x512 values in which I compare at run-time. So the program outflow will be sort of as follows: - Program executes - Extracts (1) 12x512 - Extracts (2) 12x512 - Compares (1) to (2) - Extract (3) - Compares (3) to …

Public Class Form1 Dim CloseButton As New Close Dim RestoreButton As New Restore Dim MinButton As New Minimise Dim Drag As Boolean Dim MouseX As Integer Dim MouseY As Integer Dim WinBorder As New PictureBox Private Sub CloseButtonCode() Handles Me.Load CloseButton.Anchor = AnchorStyles.Top + AnchorStyles.Right CloseButton.Enabled = True CloseButton.Location = …

Hi. I was just wondering if there is a simple way to get the file size of a selected program. The thing is that if i select a word document or etc the file size should be 2.34MB not like 2355.2 in KB or B. If the file size is …

Hi there, I'm back again and this time I have another question: So I figured out that I have to use Array Lists for my last question, but now, I have another problem: How do I get all the user inputs separated into different strings so that the user may …

i need a VB.net application that contains a button named "LIVE" and when i click on this button i want roiters news to appear, who can help me?

Here is what i coded for a simple binary to octal converion. If no of digits in binary are multiple of 3 then it works fine but get crashed otherwise . . . . am not able to figure our how to pad up for the grouping of 3 when …

Hi! what is wrong with the following function? void foo(*ptr){ char buff[127]; ctrcpy(*ptr,buff); } I know that it doesn't really do something... it's for information purpose only.... Thanx!!

Can I ask you how can I automatically fill my TextBox when I choose an unbound item in ComboBox. For example, I choose "January" in my First ComboBox, then "09" in 2nd ComboBox and "1993" for 3rd. Then it will Show "January 09, 1993" in my TextBox.

I posted a question about algorithms for Tic Tac Toe's invincible AI (that never loses, only wins or ties), and found a scoring method. Here is the code I came up with. As of this moment it takes the next available space, so the scoring appears not to be working. …