Software Development Forum

Hi All, I am having a stock report in my application. It has 4 Datagridview each one for OpeningStock, Purchase, Sales and ClosingStock. I am using vs2005 and access 2003 database. The report is based on from and to date basis. (i.e: if the user selects 2 dates, The opeining …

Good to all. Here I have a doubt in Visual basic 6.0. I need have excel file as backend and the visual basic is to be the frontend for my project which I am on it. In the excel sheet keeps updating while saving in vb form. Please If any …

Okay so I have a final project due, and it's not really a beast, but I've begun to wonder if I'm doing everything I'm supposed to do, so I'm going to outline the assignment and give an overview of what I have. I was hoping I could get a couple …

Okay I am trying to write a program where a parent process creates three child processes. Also waits for each of them to finish. Here is my code: [code] #include <stdio.h> #include <unistd.h> main() { int i; // create 3 child processes for (i = 0; i < 3; i++) …

hi, How to save the long format DateTimePicker in mysql?

I have started writing a *really* basic tile engine in C++ and I'm not entirely sure when to use const return values. Should I use them in cases like this class A { private: Rectangle hitBox; public: A(); const bool Collision(const Rectangle& hitBox2); }; or is it totally pointless?

I'm working through Python Programming by Zelle. I've entered the code for the racquetball problem in Chapter 9 exactly as written in the text. (At least I think so.) The program returns one game only then quits. I've prototyped and unit tested but can't find my mistake. Any insights would …

Hello all, A simple problem for anyone who know Qt, I'm very new to Qt and GUI programming in general. I’m on a linux platform and using Qtcreator. I have a window (see [here](http://1.bp.blogspot.com/-QM3EiY3oh5Q/UMeo8rb4fUI/AAAAAAAAAWY/tWPLdEl6OgM/s320/box.png) for a screen shot). I wish to have two "sub regions" (incorrect terminology I’m sure) within …

I am trying to figure out the way to use the nested loop in a proper way but so far i am failed, The loop run to infinity when i run the program which i definitely don't want to do, here is my code, .MODEL SMALL .STACK 100H .DATA var1 …

I'm making a running text software where there is some text that runs alternately in the marqueelabel control. I wanted at every turn of the text, the background of marqueelabel will be blinking. I use three timer control, ie two System.Windows.Forms.Timer (Timer1 and timer2) and one System.Timers.Timer (elapsedTime). Timer1 is …

Hi! I'm writing a program that will take a an inputed phrase, assigns each letter to a picture of the letter from a file, and outputs the given phrase, looking like a ransom note. I have a start, but I'm not really sure where to go next. I've only just …

is it possible to pass an already defined function into a pthread? so for example within my code i am able to define an array size once a user enters an array size(for example user enters 200) it will add the numbers 1-200 to an array , i then have …

Hi, I've been having some problems with the getchar() statement. When I put it in a loop (to make an interactive input), I can't get user input anymore from within the loop. Even the following simple program doesn't work: [code] #include <stdio.h> #include <stdlib.h> int main(void) { char response, text[255]; …

In assembly language how do I write code to take input from a sensor and turns on a LED? I'm writing an assembly program that will read information from a sensor that will detect whether its raining or not. the sensor will be the input and the LED will be …

10-4. Write a class that implements a list that holds strings. 10-5. Write a bidirectional iterator for your String_list class. 10-6. Test the class by rewriting the split function to put its output into a String_list. there are theses three exercises in the book I'm studying, what is it asking …

i'd like to change my code from procedural to OOP and i've got a problem when it comes to naming methods. can somebody explain to me what's wrong with this - sort.java:36: ';' expected public static int sortAscending () { - i understand that semicolon is not needed sort.java:36: illegal …

Hi all, hope you can give me some help to edit my code. I'm unaware how to merge two arrays and allocate them to a third array(of the right size) and let's just say for the sake of things, we'll call it C. I went ahead and instead used the …

I am trying to write a python app that will switch between two views when I click on the canvas in Tkinter. I have written the views and main app as seperate objects with binds linked to the opposing view through the left mousebutton. When I run the app in …

print "Maya Data Out > %s ",pickle.loads(process.stdout.read()) File "C:\Python26\lib\pickle.py", line 1374, in loads return Unpickler(file).load() File "C:\Python26\lib\pickle.py", line 858, in load dispatch[key](self) File "C:\Python26\lib\pickle.py", line 994, in load_tuple k = self.marker() File "C:\Python26\lib\pickle.py", line 874, in marker while stack[k] is not mark: k = k-1 IndexError: list index out of …

I'm not really good wih the Big O notation so I was wondering if any one can help me find the Big O notation of this code for each of its function when they are best , worst, and adverage case and a brief explantation of why it's that. Sorry …

I'm working on a static method that I want to use to query mysql; I'd like the option of handing a char in but I'm only seeing string or int, what if I want to use a wildcard? '_' or an int '1', anyone have a clever solution?

#include<iostream> #include<cmath> #define pi 3.1415926535897 using namespace std; int main () { double lat1; double long1; double lat2; double long2; // initilaise values double latz; double longz; double a = 0; double c = 0; double distance = 0; double x = 0; double y = 0; cout << "enter …

if i want an array of 10000 ints and i just nned to use it like array only (not the functions which vector have seprately from array), then i make an array int a[10000] and vector<int>a(10000); then memory allocation time will be different for them ? if yes, then please …

This is a simple calcualtor program. What I don't understand is how I could modify it so that the calculation parameters could be intered from cmd. I don't understand how the argv and argc really work in this case. Do I need to replace all the ints with argv or …

hey I'm writing a multithreaded server , and I want to print a line in a file whenever a client is connected , I need to lock the filestream to prevent the lines of multiple thread from overlapping I used an integer lock but it won't work right , so …

Dear friends, I need our help for a new task. I have a gps track (sequence of lat long and altitude) and I would like to know if there is a way to make an offset (or a parallel line if you prefer) of this line to its right and …

Hi, I have a function which returns a pointer to array with data: `float * EZ_MATH::EZ_GE_BY_ME() { ... }` Now, how can I access this data? This doesnt work: `float * memA = temp_m.EZ_MATH::EZ_GE_BY_ME();` `ofstream output("out_file", ios::out);` `output << memA[0] <<endl;` `output << memA[1] <<endl;` Help!

I am writing the following functions I cannot tell where I should leave off with the "bootstrapping" that the first function searchMaze() is supposed to be doing, the wording is not getting through my dense head. searchMaze(maze, start_pos, finish_pos) This function takes a maze data structure as created by readMazeFile(), …

I have this singleton class public final class MySingleton{ public static MySingleton singletonInstance; private MySingleton(){} static{ singletonInstance=new MySingleton(); } public static MySingleton getInstance(){ return singletonInstance; } } I wanted to know is there any other simpler and better way of creating a singleton instance?

I'm still getting my feet wet with Java and I'm not familiar with all the custom libraries that exist; is anyone familiar with a library for working with multiple sheets of a Excel workbook? I need to pull data from a specific worksheet in the book to work with.

Hi , I have this code for win xp `char NotesDir[] = "\\Program Files\\notesw32"; char Fname[] = "C:\\Program Files\\notesw32\\notes.ini"; char Bakname[] = "C:\\Program Files\\notesw32\\notesini.bak";` But for win 7 , these files will be present in c:\\Program Files (x86) folder. How do i make sure my code works for both xp …

Hi folks. I encountered a problem. My application works perfectly if i run it from netbeans. Even it works fine when i build my project and run the jar file from the netbeans(dist) folder. But when i copy the jar file to another place(or another drive) , the jar file …

I have this program where when I click start, it starts painting rectangles one on top of the other by storing each rectangle created by paintComponent in an array and then displaying them on the screen. When I click stop, the animation stops. This is all fine and dandy but …

Hey everyone, I am attempting to add an array of JTextFields to one of my JPanels and for some reason i keep getting errors and the program crashes when i run it. I know i am prob making some noob mistake but this a project for my first Java class …

Hi, there people! I have a project I have to deliver but I am at loss on the relevant tech. to use although I am a predominantly vb.net guy. The VB.Net is the 2008 one. I am to deliver a software that would enable an internet cafe do these basic …

#include <iostream> #include <string> #include <iomanip> #include "mainmenu.h" using namespace std; string bookTitle[20] = {""}; string isbn[20] = {""}; string author[20] = {""}; string publisher[20] = {""}; string dateAdded[20] = {""}; int qtyOnHand[20] = {0}; double wholesale[20] = {0.0}; double retail[20] = {0.0}; string searchTitle; int main() { // Declarations …

I'm working on learning some basic java programming. I have a project that I've been working on dealing mostly with arrays. I have completed the objective, I'm just not sure that I did it in the most effective way possible. My question here is to see if an experienced java …

Forgive me if the title was even worded properly. What I'm trying to accomplish is to be able to create an unlimited number of objects for use by struct and quickly realizing that my thought process on how to achieve that is wrong. Here's the related code: struct person { …

When my program calls MsgBox it appears in the middle of the monitor. Anyone know how to move it somewhere within the boundries of my program's window?

I'm having an issue in creating my "Horse Race" program. I'm getting error "subscript requires array or pointer type" in my while(winner==false) loop at if(q==null) { tick[q]++; } and for(int q=0; q<numhor; q++) { if(tick[q]==10) { ... } } in addition to several places in my separate class files, even …

Not sure if I posted correctly. I am trying to do a bubble sort on a 2D array. I want to sort the array by columns. I get it to compile but it doesn't run correctly. #include <iostream> using namespace std; int main() { int array[10][10]; int col, row; cout<<"Enter …

Hi Guys, just wondered if anyone knows how to change the focus from 1 textbox to another? i have 2 textboxes and a few buttons, what i am trying to do is select a textbox (either) then hit the button and the value from the button (i.e 1) will go …

#include<stdio.h> #include<conio.h> int main() { long double p=778.567; printf("%Lf",p); getch(); return 0; } it's output is : -115403.... something... why is it so ?

Below is a short program I'M working of from udacity.com but I can't figure out why I'M getting the value 6 from the first call to the function. # Define a procedure, biggest, that takes three # numbers as inputs and returns the largest of # those three numbers. def …

Error: Cross-thread operation not valid: Control 'TextBox1' accessed from a thread other than the thread it was created on. After doing some research online I found when I add Control.CheckForIllegalCrossThreadCalls = False it works but I feel like that is not the proper way to handle this error. If anyone …

The following short program is taken from a book in numerical analysis (by Mircea Andrecut). It's about bisection (very simple): #include<stdio.h> #include<stdlib.h> #include<math.h> double f(double x) { return x*x-3; } double bisection(double f(double), double a, double b) { double epsilon = 1E-7, x; int kmax, k; if (f(a)*f(b) > 0) …

> Write an EFFICIENT program that reads in the name of a file containing positive integers that are less than 1,000,000. The program prints out the integers in the file, in the order that they appear, eliminating duplicates. So if the file contained 8 3 1 9 2 8 15 …

Hello, I'm working on an assignment and I'm having a bit of trouble. Around **line 12** it calls a **world->getOrganism(int,int)** However no matter what value of grid[][] I return it crashes. The if() should be checking to see if that particular grid cordinate is of the ant class. (dynamic_cast<ant *>(world->getOrganism(i, …

how to write a program to stimulate a bank transaction. there are two bank accounts : checking and saving. first, askk for the initial balance of the bank accounts ; reject negative balance, then as for the transaction ; option are deposit, withdraw, and transfer. then ask for the account …

can any one pleace help me to code this program i have no idea how to do it. it will be very greatful if any one can help me thanks