Software Development Forum

Basic structure of main.c: int main () { Open the file data.txt and obtain the file handler fh; Create a thread my_thread using pthread_create; pass fh to my_thread; Wait until my_thread terminates, using pthread_join; Print out how many lines exist in data.txt. } Basic structure of thread_function.c: void *count_lines(void *arg) …

package MyJava; //change package name according to what the name of the package //the class would be installed to import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; public class [B]Calculator[/B] extends JFrame implements ActionListener{ private JTextField displayText = new JTextField(30); private JButton[] button = new JButton[16]; private String[] keys = …

I am working on a doubly linked list assignment for my class and I am getting a segmentation fault on my test for the copy constructor. I don't know if the problem lies within my copyList method or my copy constructor logic. Any assistance be great. Here is my header …

Hello all, I'm having some trouble with a project I am doing and I was wandering if anybody could help me/point me in the right direction. So the gist of what is happening is I have a program that is supposed to be flipping 2 coins independently of each other …

[code] Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim lCount As Integer For lCount = 1 To 5 ListView1.Items.Add(lCount.ToString) Next If ListView1.Items.Count > 0 Then ListView1.Items(0).Selected = True End If [/code] I have even write the code to select the first node,i want first row …

i am new in j2me programming and i want to code a file compression/decompression in series 40 phones. anyone could help me or could share their codes with me. thank you very much

can you tell me what differences are between c & c++?

hi i m sorry for this noob question but there something i don't get i was reading abt File format like PE for example i was wondering how is C unverisal on MAC win and unix since they use diffrent file format does C takes care of each file format …

hello everyone. when working with objects, how would one specify that the input of negative numbers is not allowed in the constructor part of the code?

Hello I'm new to java & I am trying to convert a float to a string in my simple program. But I get an error on that line. Can you tell me why or what I need to do to fix it? Maybe I haven't imported the right things or …

#include <iostream> #include <sstream> #include <fstream> #include <vector> #include <string> using namespace std; class PriceFeed { public: PriceFeed(vector<string>& tickers) { // init(tickers); } } int main () { vector<string> tickers; tickers.push_back("AAPL"); tickers.push_back("XOM"); //PriceFeed(tickers); PriceFeed pf = new PriceFeed(tickers); [COLOR="Red"]// Error on this line[/COLOR] system("pause"); //return 0; } Can you please …

hi everyone...can any one tell 10 advanteges and disadvanteges of c-language plzz urgent

I have a calculator program and I want to add a progress bar. The progress bar is for visual effects only; I want it to animate for just enough time so that it will be noticed everytime I hit the "=" button. I'm a newbie in making forms and actually, …

[B]Why I can't compile a helloworld with Unicode supported by wxDevC++? [/B] I made a test programm. But I can only compile it by GCC compiler (library type is static lib) without wxwidgets Unicode support. If I checked the Unicode support at compiling setttings, it said ld error, can't find …

Hey, ran into a little trouble with this, keep getting this error. I went over it many times, but can seem to find where the curly bracket is missing or if I have too many or so. [CODE]import java.lang.*; /** * Carries out the instructions from all the objects. * …

Maybe someone can help me with this. I've been working with python for less than a week, and it's my first programming language. I'm looking to figure out some basic things in python for an algorithm I wrote in a pseudo-code. I'd like to know how I can take an …

Hi. I want to compare two arraylists with each other, but not with the compare method. The problem is that i am using .net remoting, and i gotta keep a clients arraylist updated. And it would be a waste of bandwith to send the arraylist as an object over to …

Okay, we are on the third assignment in Java, Java, Java. I do not understand the book that well and while I have been searching google for something explained in simpler terms it hasn't came up. We have two files: OneRowNim2.java and Assign3.java The specifications were: You are to create …

Hi, I need to copy a file from one location say c:\a\abc.txt to c:\b\abc.txt. I used the following below code #include <stdio.h> #include<fstream> int main() { if ( rename("c:\a\abc.txt","c:\b\abc.txt") perror( NULL ); system("pause"); return 0; } when i ran this code, the original file in the folder "a" gets deleted. …

i found this code in C++ but i can't convert it from C++ to C, help me please i don't know C++. [code=cplusplus] #include <iostream> #include<stack> #include<stdio.h> #include <string.h> using namespace std; #define MAX 10000 /*class node{ int */ unsigned int graph[MAX][MAX];// = { { 0, 1 },// 0 1 …

Hi all, i am new to java servlets. i simply created a login form with username and password fields. now when i deployed it on tomcat server, after i click on submit button it gives the following error: java.sql.SQLException: Column not found codin of this login servlet is attached below. …

Hi, [? 1] How do I create an API for a game? [? 2] If this subject is too hard for a novice/intermediate programmer, where do I best find tutorials/resources about API's? [1] I asked myself this question, as well as google, yet no easy answers or explanations popped up, …

In VB.NET 2005 what is the best way to get control when someone checks or unchecks a checkbox cell in a datagridview. I am getting conflicting results and it seems that either the current cell is the previous cell or the value is always false. I just want a way …

Hello, and thank you for taking the time to help me with this! I am working on a program that keeps information about staff members, such as volunteers and employees. The problem I am having is that when I run the program (everything compiles fine), I enter a members, and …

i am creating a bank application with connection of MS ACCESS Database which is already construct a table with the following statement [CODE] Statement stmt = con.createStatement(); stmt.executeUpdate("CREATE TABLE ACCOUNT " + "(AccName VARCHAR(32), AccNum INTEGER, Deposit FLOAT, " + "Balance FLOAT, Withdraw FLOAT)"); [/CODE] So everything works fine ,the …

This is somewhat a simple project I wrote by getting help from google groups I always recommend. assemble this code using this command: [QUOTE]nasm -o 1.com 1.asm[/QUOTE]

Im having trouble with this problem: The Maclaurin series for arctan(x) is a formula which allows us to compute an approximation to arctan(x) as a polynomial in x. The formula is: arctan(x) = x - x3/3 + x5/5 - x7/7 + x9/9 - x11/11 + . . . Write a …

[CODE]Sub QryReport() On Error Resume Next Dim QryDef As QueryDef Dim str As String Set QryDef = dbase.QueryDefs("balancesheet") dbase.QueryDefs.Refresh If Err.Number = 3265 Then Set QryDef = dbase.CreateQueryDef("balancesheet") dbase.QueryDefs.Refresh End If str = "select * from [balancesheet]" & _ " where Date ='" & Dtpicker.Value & "'" QryDef.SQL = str …

Having decided to brush up on my programming, I wanted to try and make a Yahtzee game, only console based. It is object-oriented for the most part. My trouble is with generating different numbers for each die. I will post my Dice class to help show what I am doing: …

Hi. (If you don't feel like explaining, please tell me what I need to read up on. Derived classes? Polymorphism?). I have got this assignment from school, in which we are handed a main.cpp file and we are supposed to write the class for it. But there's a few thing …

Hi, I am trying to get my form to validate user input. If it is ready to complete an operation (Valid input) it affects a read-only text box with "Ready" if not "Not Ready" the values that are accepted are 1-9999, it needs to check multiple boxes aswel (The code …

What's the simplest way of being able to build Qt Applications using C++? notepad? specific IDE? HOW do I do it? Can someone PLEASE walk me through it. I found instructions online for integrating MS Visual C++ with Qt. I ended up taking 5-6 hours out of my time to …

So I have spent a few days now stuck on this problem. I have a file, at the offset &hd026 there is a name. This name can be any amount of characters long, this part is easy, already have something to do this and saves it into a textbox. Now …

The c# code below can be used to capture the screen . Combined with the filesystemwatcher class ,this code can be used to monitor user activities on a computer.You can also add a timer to this method to capture the screen at regular intervals or you can use a simple …

Hi, I have a internet connection at home. I have installed Python2.6.1 on my laptop in C:\Python26 directory. I have written a script named "TestUtil_SendMail.py" and my intension is to send a mail to the given mail id. But when am running the script I am getting an error: "[Errno …

If I have a form that is to resemble a standard dialog box that prompts for a name and I need to display the name on the main form when the main form is first run, how do I do that?

Hi I have a method that has a reference to a linked list and an int that is the value. I want to recursively call that value to count and return how often that value is in the linked list. So, here is what I got: [CODE]public static int find(LinkedNode …

id like to write a function that checks if an object's variables have been changed. the only way i can think of is to create a duplicate object and compare each variable. im really lazy, and this seems like alot of effort. can anybody help me think outside the box? …

I'm using netbeans graphic intarface to create my own JPanel. But I have a problem. When I change panel's layout in grid one I can only place cells on left and right side only of others. So instead of 2x2 I can only make 4x1. Do you know what shoyd …

I've done a bit of searching but didn't come up with anything. Is there a way to use multiple placeholders and then use a list with as it assignment. i.e. [CODE] l = [1,2,3] l2 =['blah',50] print('%i isnt %i isnt %i which isnt %i' %(l[:],l2[1]))[/CODE] So if the first list …

Yes I know its a long code and it will get longer but there is a compiler error in the [COLOR="Green"]int main ()[/COLOR] First Visual C++ 2008 Express edition error [QUOTE] ------ Build started: Project: MAC ADDRESS, Configuration: Debug Win32 ------ Compiling... MAC ADDRESS.cpp warning C4603: '_WIN32_WINNT' : macro is …

I am creating a simple program, I really need the code for this..here is my situation.. For example if I input a student no. in a textbox to perform search option then click the search button, I want to see the info of the said student to appear from the …

Hey guys, I was just making a tiny program, where I need the user to enter numbers. My question is, how do get numbers? I tried: [code='python'] self.panel=wx.Panel(None,-1) self.n=wx.TextCtrl(self.panel,-1,"Number") self.get=int(self.n.GetValue()) [/code] -but that didn't work... so how do I do it?

So I have an interface program called: IstackInterface.java, which contains method declarations and it compiles fine. I put it in a package we call package abc. Now I have another java program called IArrayStack.java that says: [code] public class IArrayStack implements IStackInterface { // code goes here } [/code] But …

I want to select da MSCommunication control component in toolbox. can any one pls tell wat shall i do??????????? respond immediately!!!!!!!!!!!!!!!!!!!!

Hi, I have class which has two bool vectors: [CODE] typedef vector<bool> my_bool_vector; class MyClass{ private: my_bool_vector bvec; my_bool_vector another_bvec; public: explicit MyClass(unsigned int size) : bvec(size, false), another_bvec(size, false) { } }; MyClass MyObject (10); [/CODE] I want to be able to access bvec and another_bvec in the following …

Hi everyone, I am facing problems in updating controls using another thread created by another class (not Form1). I am able to update controls of main form by another thread if that thread was created by Form1 or main form, but when it is created by other class, i am …

Hi can you please help me with the following code program as I am new to java. [B][U]Step1: define the interface named Ashape[/U][/B] write an interface called Ashape that defines: double DEFAULT_SIZE equal to 1.0 [by default it is constant] method calcPerim() that returns a double equal to the perimeter …

I was hoping someone could give me the code to read and then to system print out the words in the text file. The textfile contains: One, Two, Three, I'm new to IO readers so this would help alot as I'm having trouble reprinting the information out.

Sorry if this isn't the right place for this type of question (I'm pretty new to Python). If there is a better venue for this kind of thing, please let me know: I tried to run a few PyQwt demo, but it complained that there was no module named PyQt4. …