Software Development Forum

Hi all, I have had a look around the forums but i could find anything, if someone could point me in the right direction for this. What is the best way to handle an sql connection, in my program I have to get data from the server on a button …

Please help me how can i creat a class and use in windows application for Studen Result card .[COLOR="red"]I want type below code in class and want to use in windows application for student Grade [/COLOR] [CODE] private string MethodGrade(float Avrage) { string Grade; if (Avrage > 91) { Grade …

I am just starting MS Visual Studio 2005. My laptop has a 64 bit Intel microprocessor and the OS installed is 64 bit Windows 7. I created a DLL in VC++ 2005 using a Export Definitions File (.def) and then created an application on VB to test it. The entire …

Can somebody explain to me why every time i subtract currency it displays the negative sign, even if the number used to subtract was small. for example: $ 5.00 - $ 3.00 = $ -2.00

Good Day i already set up my MySql Database and my form for this application. I have this project in school that will give time credits to every student. For example a student gave 30 hours of time consumable, everytime he uses the computer the time will deduct how mmuch …

Whats up guys? This program has given me nightmares lol. When input is a positive integer, the program should reduce it to prime factors. The integer is less than 900. The program should Output the prime factors as a series that when multiplied together, will return the original integer. If …

hello am doing a library program. i am almost done with it. but now my problem is i have to make the record update section work as each of the record can be updated separately. so far i think of making another menu and do it like that. now my …

[CODE]#include <Windows.h> HWND hgMainWnd = 0; bool InitWindowsApp(HINSTANCE instanceHandle, int show); int Run(); LRESULT CALLBACK WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR pCmdLine, int nShowCmd) { if(!InitWindowsApp(hInstance, nShowCmd)) return 0; return Run(); } bool InitWindowsApp(HINSTANCE instanceHandle, int show) { WNDCLASS wc; wc.style …

If I have a templated storage class, how can I create a specialized template for nested storage class. I already know how to specialize pointer template, but I don't know how to specialize this. EG: [CODE]template <typename Type> class Array { ///Array class code }; int main() { Array<int> rob; …

hello all, I am writing a program to test sorting times, and I am having trouble with my quick sort. essentially, my quicksort is not sorting and I am having alot of trouble with it. Does anyone see any real problems with my implementation? Thanks! [CODE] //-------------------------------------------------------- void quicksort(name_t *&charArray, …

Hi All, I am not sure where am i going wrong but this is something which made me realise that my understanding about the for-each and apply-templates was wrong. :( I have 2 XMLs, I want to display the 'value' present in one XML after comparing the 'name' present in …

Hi all, I am currently trying (and now wondering if) you can add multiple threads to a program to do the same job? Basically I am writing a web crawler for a search engine and it adds many URLs to an ArrayList which is used as a queue. I add …

Hi, I have the following code. and it works fine. [CODE] class base { public: base() {}; virtual ~base() {}; virtual void foo() = 0; virtual void boo() = 0; }; class derive2 : public virtual base { public: derive2() {}; virtual ~derive2() {}; virtual void foo() {}; }; class …

I need the code in console Applecation

My class did a practice program and worked thru it however i was absent due to illness but i was sent the parameters they used for practice. I attempted it on my own but i was unable to figure it completely but i did get part of it down before …

Hi friends! What is the difference between these two definitions of variables? [CODE]const char *msg; char* const msg;[/CODE] thanks in advance)

Hi! I am creating a desktop Java application using Netbeans. My task is to generate an array and than sort it (InsertSort, SelectSort, BubbleSort). My question is how do I show the value of all elements from generated array into the textfield? What i have tried to do is: [CODE] …

import java.util.Scanner; public class FirstProgram { public static void main(String[]args) { Scanner input = new Scanner(System.in); int x = 3; int num1, num2, num3, num4; while (x <= 3) { System.out.println("enter a number 1,2,3>"); num1 = input.nextInt(); num2 = input.nextInt(); num3 = input.nextInt(); num4 = input.nextInt(); { if (num1 == …

Hi all, I am writing a program in which there is a part that computes all the possible values for two vectors of string patterns, one like 1XX78X9X32X (11 digit) the other like 26XX (4 digit), using digits from 0 to 9, and that passes all these possible strings to …

Hello Members, I am trying to add weights to a Graph that is implemented using JGrapht. I keep getting a NullPointerException, which I am unable to understand as all other edges seems to be added fine. I would be grateful for any help. The code so far: [CODE]import org.jgrapht.*; import …

I wrote a program to analyze a log file for a machine that my company repairs. The program that runs the machine spits output into a text file (.log) and my program will analyze it and return the results of different calculations to the user. The log file idealy looks …

hi,I am trying to write a simple code that visit page every x seconds.I prefer timer function because thread freeze the browser and the program.Somebody whit idea?

I have problem with printing Crystalreports from Dataset as a source. I have a Dataset fullfilled with data from query and CrystalRaports doesn't show any data from dataset on the report. Do you haeve any ideas what is the problem. My Code: [CODE]using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; …

Hello there guys I have a noob question I just want to ask what is syntax declaration? Is it the program source code itself? help me please I'm a bit confused...

hello frndzz... just wrote a piece of code in c++....bt this didnt create any .DAT file as expected.....dun knw wats wrng.... #include<fstream> #include<iostream> using namespace std; class person { int age; char name[40]; public: void get() { cout<<"enter age:"; cin>>age; cout<<"enter name:"; cin>>name; } void show() { cout<<"age is:"<<age<<endl; cout<<"name …

// i dont know why the part below bunny class doesnt work properly help line: 223 i allocated a class array but i can figure out why it doesnt work [CODE=c++] #include "stdafx.h" #include <iostream> #include <ctime> #include <string> int p[100]; // global varialbe int times=0,last=0; void ruleta() { for …

Hy, I have a question... I want for my application to select on startup the database i want...I thought about keeping my database name in a combo box and when i run my application i will select what i want...but....how can i concatenate in app.config the ConnectionString?Does anyone Know? Thanks.

okay i've got a problem with this code its going to be a apart of a word guessing game, the problem is that my code reads the file i want it too, but when i ttry to guess the letter it will only read the first letter, i know that …

Hello, I am having a problem when I am trying to create a new node. The problem is on line: [CODE] tnode->lc= new cttNode; [/CODE] Here is the template the problem resides in: [CODE] template <class B> int ctt<B> :: insertIfNew(const string &key, const B &index) { cttNode<B> *tnode= root; …

Hi, I have to make a datagridview and join three tables which have realtionships in my database and i need to display some of the data in these tables in a datagridview can u toutor me pls?

Hi Got a webBrowser control on a form displaying ads from a server, trying to load page in the default browser when user clicks on a banner within webBrowser control, by default the control always load pages within IE Browser which is not really what one wants. This is about …

Hi, I've got an assignment at school that I would really like help with. I'm a total newbie. [code=c]#include <iostream> using namespace std; int main() { char chr=(char)67; unsigned int offset = 1000; char * ptr=(char*)0; ptr+=offset; cout << ptr[0] << (char)43 << (char)(chr-24) << endl; } [/code] The questions …

hi can anyone tell me why the netbeans ide generates a null pointer exception. here my code. for class CustomFileFilter [CODE]import java.io.File; public class CustomFileFilter extends javax.swing.filechooser.FileFilter { private String extension; private String description; public void setDescription(String description) { this.description = description; } public void setExtension(String extension) { this.extension = …

I am currently writing a program in which you input a word and the program then outputs all of the different ways the characters can be moved round into anagrams. I have wrote a way of turning the command line argument into a char array using the toCharArray() now I …

Hi Guys, I am currently working on a vb project. What I am trying to do is reading a XML file and saving all the data in to the Access DB. Once this is done, I read the data from the access Db and display it in the required fields …

Hello, im a noob with C++ at the moment and Im trying to create a BMP image from pixel data stored in a array. Everything seems to work except that when i look at the file generated in a hex editor i get an extra '00 00' in between the …

I'm using PrintStream, to put some text in a txt. But how do I append to the end of the file? I saw some code whilst google-ing and it had other inputbufferstream stuff in it. Does PrintStream have its own append option?

Hey everyone!! I am having trouble printing the whole of a multidimensional char array. [CODE] #include <iostream> using namespace std; int main(){ char array [5][10] = {"---------", "| |", "| |", "---------"}; cout << array << endl; system ("pause"); return 0; } [/CODE] It just gives me random numbers and …

hi, i have a problem comparing values in an array and how to display them sample: [code]int[] d = new int[c]; for(i=0,j=1;i<d.length;i++,j++){ d[i]=Integer.parseInt(JOptionPane.showInputDialog("Enter value : "+j)); }[/code] i don't know how to start comparing values of each index's in the array..can someone help me? thanks BTW(new to this forum):)

Hi mates!) If somebody can - please explain me - what does mean "[U]the lowest[/U]" in this context - [QUOTE]The open() function shall return a file descriptor for the named file that is [B][U]the lowest[/U][/B] file descriptor not currently open for that process.[/QUOTE] the QUOTE is from here - [URL="http://pubs.opengroup.org/onlinepubs/009695399/functions/open.html"]http://pubs.opengroup.org/onlinepubs/[/URL] …

Dear All, How can I do this I created 2 forms... 1 is the main form and another is monthcalendar form. When i cliked on a button in MAIN form it will lik to another form which is MONTHCALENDAR form. When I click on the date in MonthCalendar , How …

how to save the state of radio buttons on application exit.how to get or set check state of radio buttons of a form,from another form.pleasssssssssssssssssssssssssssss help me with dis..its very urgent.i am new to c sharp.i will be really very grateful. :) thank you

[B]i am getting this error can some one give me some directions[/B] Error 1 'ShapesDemo.Rectangle' does not contain a constructor that takes 0 arguments [CODE]using System; namespace ShapesDemo { abstract class GeometricFigure { static void Main(string[] args) { Rectangle rectangle = new Rectangle(8,8); Square square = new Square(9,7); DisplayFigureResults(square); Triangle …

Hi, I have a problem related to Java servlet sessions. I don't understand why the getAttribute() function of the session object is used before setAttribute(); Here is the code: [code]Vector buylist=(Vector)session.getAttribute("Register"); if (action.equals("del")) { String del = request.getParameter("deli"); int d = (new Integer(del)).intValue(); buylist.removeElementAt(d); } session.setAttribute("Register", buylist);[/code] Thanks.

Hey I am trying to do a project on Test Engine. I need to retrieve random rows of questions from access database. I did the following code, but every time I once close and run it again, the sequence of questions is same. How can I change the sequence every …

hi, I have the following code and it compiles on Netbeans with no errors or warnings but when I load the applet in a browser the browser does not display all of the pictures that I got it to draw. The only picture it draws is my_gif. I have tried …

I'm working on a simple program, but I help with a part of it. When I click the submit button I need the name field to be cleared and for all of the checkbox to be unchecked. I have the name field done, but I need help with unchecking all …

Hi all, I just want to ask about setprecision because I'm a bit confused. here's the code: [CODE] #include <iostream> #include <iomanip> using namespace std; int main() { double rate = x; cout << fixed << setprecision(2) << rate; }[/CODE] where x = to following: the left side of equation …

Can anyone clear my concepts of IsDaylightSavingTime() function of DateTime in C#. I am really confused about it. I want to ask exactly what is the need and use of this function? Thanx

What is wrong with my fread() [CODE]#include<stdlib.h> #include<stdio.h> #include<math.h> double stdDev(double avg, double x[]) { double stdDeviation; double diff; double Sqdiff; double sum=0; int i; for(i = 0; i<50; i++) { diff=x[i]-avg; Sqdiff=pow(diff,2); sum+=Sqdiff; } stdDeviation=sum/avg; return sqrt(stdDeviation); } double maximum(double x[]) { int i; double max; max=0; for( i …