Software Development Forum

Server code part: void spawn (char* program, char** arg_list) // Executing the clients command { printf("\n\nprogram = %s\narg_list = %s\n\str1=%s!!!\nstr2=%s\n\n",program,arg_list,str1,str2); dup2(s2, STDOUT_FILENO); //Redericting information to socket dup2(s2, STDERR_FILENO); execvp (program, arg_list);abort (); // Executing the clients command - After this, program gets stuck, why? /* if (send(s2, "This works multiple …

Hello everybody, This is parking program .I defined 4 task (keyboard,enter vehicle,exit vehicle,display) The program is compile but when I run it and press keys (E,S,F), it does not work. This program is written for linux. Can you help me? #include <stdio.h> #include <unistd.h> #include <sys/types.h> #include <stdlib.h> #include <pthread.h> …

Literally, I have been asked this question ""The Fibonacci sequence is 0, 1, 1, 2, 3, 5, 8, 13, … ; the first two terms are 0 and 1, and each term thereafter is the sum of the two preceding terms – i.e., Fib[n] = Fib[n – 1] + Fib[n …

Hey Guys, I'm want to output a calculation to a JLabel. Example: double num1 = 14; double num2 = 3; double ans; ans = num1/num2; JLabel jl = new JLabel(); add(jl); jl.setText("The Answer is: " + ans); Currently the answer for this will be 4.666666667. Now if this was a …

Which is the most booming computer programming language?

I am having trouble with my login and receive this warning 'noOfRows = da.Fill(ds, "tblCustomers");' No value given for one or more required parameters. I want My Login to search my database for the correct pin and account number but my program doesnt seem to work. My code for form1 …

Dim Dbl1 As Double Dim Dbl2 As Double Dim Aux1 As String Dim qtyadd As String Dim subtotaladd As String Dim itm As MSComctlLib.ListItem Dim i As Integer Set itm = ListView1.FindItem(txtCode.Text) If itm Is Nothing Then ListView1.ListItems.Add , , txtCode.Text ListView1.ListItems.Item(ListView1.ListItems.Count).ListSubItems.Add , , txtproductname.Text ListView1.ListItems.Item(ListView1.ListItems.Count).ListSubItems.Add , , txtqty.Text ListView1.ListItems.Item(ListView1.ListItems.Count).ListSubItems.Add …

I think that the main problem on my code is that iam trying to pass a struct through another struct . Is there a problem if i use "->" instead of (*). ? Because it keeps showing me an error that say's : invalid type of argument '->' Iam trying …

just want to know the correct synthax for creating a table in access database using vb myqry = "CREATE TABLE HoldInvoide'" & k & "'(Barcode varchar(20) not null Primary Key, ItemName varchar(40) not null, Quantity int , Price double, Total double)" k is a variable i want to create a …

Hello! I'm new here, and I need some help. :) I am working on a program that has to write and read a binary file. I have to add lectures to it, they look like: **COURSECODE;COURSENAME;MAXAPPLICANTS;ACTUALAPPLICANTS;** I could write that in a file without any problems using `char*`. My question …

experts please help on querying and counting the frequency of data, i want to count the number of data appearance then put it on like this: Name----Lastname----Relationship----Freq Egie----Tayag-------Brother---------2 i will place the result on a report counting the number of a person's visit on the theme park. TIA ^_^ SELECT …

Hello I am trying to display an ID which is a primary key in my table by selecting the corresponding name in my table. the names have been saved in a combo box and depending on the name selected the textbox will display that Id. the code I have so …

Hello I'm writing a script to get content of web pages on different machines and compare them using their md5 hash hear is my code #!/bin/bash # Cluster 1 CLUSTER1_SERVERS="srv01:7051 srv02:7052 srv03:7053 srv04:7054" CLUSTER1_APPLIS="test/version.html test2/version.html test3/version.jsp test4/version.html test5/version.jsp" # Cluster 2 CLUSTER2_SERVERS="srv01:7055 srv02:7056 srv03:7057 srv04:7058" CLUSTER2_APPLIS="test/version.html test2/version.html test3/version.jsp test4/version.html" # …

Hey guys i was just wondering if any of you have good links to sources that i can learn assembly from all i want to know is what the CMP PUSH EAX... means. basically i just want a reference to help me understand assembly language like in OllyDBG. Thanks.

Hello, I have a Textbox and on the textchanged event it takes the users input and searches through a database and takes the items which are like the users input and puts them in a listbox which a user can select from. The problem with this method is that it …

Hello I am trying to insert some data into a sql server i have but it seems like I'm formating the information wrong. This is what i have so far. product id = int; type = string; watt = float; volts = float; String query = "INSERT INTO GoodCustomer(Product ID, …

So I have a code that prints out the `sys.argv` when the program is ran. How can I parse $ python ./arch.py install * to show `["./arch.py","install","*"]` Instead of `["./arch.py","install",#other files in directory]`?

what is the difference of passing an array to a function like this function(int x[]){ } or like this(int x*){ } what is the difference both ways seem to work

hii, i am trying to create an image in which i am drawing a chess board with multiple colors and Drawing a string on it. but the string is not always drawn. sometimes it is drawing half charecter. I hv tried AddString it also doesnt work. plz help it is …

Please am new to java and i need an assistant on loading hexadecimal from a textfile and converting it into binary(Loader class) then the binary will be kept in another class(memory class). then the binary will be forwarded to another output file.

Everything was running fine, then I made a simple change. Like adding a class or two and bang!!! C2995. Can you spot where I have obviously gone blind and cannot see the error. I have header gaurds throughout the solution, so I dont understand why this is happening. Here are …

I recently learn about the polymorphism and I don't know what is the purpose to use this feature. From http://www.cplusplus.com/doc/tutorial/polymorphism/ , it uses the child class rather than the parent class. I thought most of the time we inherit and we only use the parent class to access the child. …

Hi Experts, my sql query below returns 0 value, though I have entries in my data base. Please help me check my codes below; Private Sub cmdSearch_Click() Dim sTrID As String sTrID = txtSearch.Text Dim Total As Integer Set rs = New ADODB.Recordset rs.Open "Select Count(DateIn) as Total from Time_In …

My friends are keep telling me "Use debugg idiot !" I found out that for a code over 200 lines is very important. But i want to debug only a specific piece of code. And to review the results of a variable while the code is "executing" . Is this …

Hi Friends, I had a issue with telnet conncection in python. Can you send me a working module to connect to telnet windows from a linux machine using python scripting.. Thanks in Adwance, Omkar

please help me to explain the two dimentionalsales about sales person: 1. while 2. do- while 3. if 4. if-else 5. for

Hi everyone. I am currently doing small exercises on classes. Suppose you have 2 classes: Person (superclass) and Student (subclass) the class Student is extending the class Person. When creating new objects of type Student, when do use the following options: option 1: student x= new student( ..); option 2;( …

The problem with my code is that the update method doesn't get invoked even after I notify the observers. Did I miss something in my code? package com.observer3; import java.awt.FlowLayout; import java.util.Observable; import java.util.Observer; import javax.swing.JLabel; import javax.swing.JPanel; public class A extends JPanel implements Observer{ JLabel lbl; public A(){ setLayout(new …

I have 'bit' datatype in db. I convert its equivalent datatype to 'bool' in c# when i declare. protected bool e_Status; And when I set the property for the above, public bool Status { get { return e_Status; } set { e_Status = value; } } Now how do I …

i am doing a windows application program and these are the code inside System.Diagnostics.Process.Start("ConsoleApplication1.exe"); Thread.Sleep(500); System.Diagnostics.Process.Start("ConsoleApplication2.exe"); Thread.Sleep(500); System.Diagnostics.Process.Start("ConsoleApplication3.exe"); as if one of the console application program face error it will show in the cmd, so how would i going to capture those error in cmd and show in the message …

Can anyone please explain to me how to compute DCT? I'm finding it hard to understand it.   I attached the formulas the Discrete Cosine Transform (DCT) and it's Inverse-DCT.

Hey guys, can anyone tell me how I could use randomaccessfile to read in a txt file and copy the content to a tree? Also how to then do the opposite and write newly changed nodes from the tree onto the text file? It's pretty much like creating a save …

Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click Dim cmd As New OleDb.OleDbCommand If Not cnn.State = ConnectionState.Open Then 'open connection if it is not yet open cnn.Open() End If cmd.Connection = cnn 'check whether add new or update If MsgBox("Do you want save?", vbInformation + …

Hi, i'm trying to use an `AffineTransform` to transform a point to pixels on a 400x400 canvas. What kind of transform would you use? For example: given the points (-1, 1) --transform--> (0, 0) (pixels) (1, 1) --transform--> (400, 0) (pixels) (-1, -1) --transform--> (0, 400) (pixels) (1, -1) --transform--> …

Anybody out there that used Python on an Android system? Something like the subset on http://pygame.renpy.org/

Group, I have 36 string names that I'd like to create. In general these string names can be very similar. I thought I'd try creating a loop to do this for me. But I can seem to find the correct syntax to do this. To clarify, these string names can …

Problem in loading Dialogbox Infront of a form in vb.net

Hi Guys, I am kind of new to python and started working on python from February2013. I have a script which run on linux machine. It captures the available RAM from the system and then tries to eat it up. I am using subprocess.Popen('free',...) command and for first loop it …

Just wondering if anyone knows how to not save a document after creation when using Microsoft.Office.Interop.Word. Basically i am using mail merge to print off a report from c#, the document get made, values are passed to it no problem and i can then print it without any issues, however, …

An error was encountered while opening associated documents the last time this solution was loaded. Document load is being skipped during this solution load in order to avoid that error. How can I resolved this error in VB 2010?

good day, I'm some time researching how to organize TabPages the TabControl, but so far there is no example of how to get leaves them in order. I found this code here but still the TabPages are not in order, someone could help. Sorry the English. http://www.dotnetspider.com/resources/18344-Hiding-Showing-Tabpages-Tabcontrol.aspx[^] TabPages adds this …

Hi, started programming 2 days ago, and i'm having a problem with Java saying one of my variables isn't initialised. Couls someone help please?! Thanks, code below: public static void adding() { int n = getN(); int total; for (int i=1; i<=n; i++) { total = i + 1; } …

So, quick question, (has to be just something I'm missing), if I want to concantate a string and integers in a url, is there a way to do so? I'm sure there is...I mean this IS python! from urllib2 import urlopen width = input("Please enter a width specification here: ") …

Roots of quadratic equcation #include<iostream.h> #include<conio.h> #include<math.h> void main() { float a,b,c,disc,root1,root2; cout<<"enter a"<<endl; cin>>a; cout<<"enter b"<<endl; cin>>b; cout<<"enter c"<<endl; cin>>c; disc=(b*b)-(4*a*c); root1=(-b+sqrt(disc))/(2*a); root2=(-b-sqrt(disc))/(2*a); cout<<"root1"<<root1<<endl; cout<<"root2"<<root2<<endl; getch(); } any question or assignment ask to me!guys

I am trying to read a structure from a .dat file...the first integer to be read is the no of readings, then there is the data in following structure format struct Oven { int rec_no; int temp; int status; char string[10]; }; below is the method through which I read …

I have less than a day to understand and learn evrything there is to know about arrays and to be able to know what the output for a code on arrays will give.. I was hoping someone will be able to suggest any good sites etc.. from which i can …

Hello, I am taking my second Java course this semester CSC-251 (advanced Java). I took introduction to computer programming last summer. With three programming courses under my belt will I be able to find a job out there in the real world? For a little background information about myself. I …

I am trying to make a compiler for my project using C but I have a problem on how to store the contents of the text file into an array or something similar so that my program can compiler or analyze my txt (code) file. Here is what I have …

Was not sure where to post this, but let this a go. I m on my final year. And I have discovered in myself a passion for programming in C and started learning it but it is all in a beginning stage. I really bored of Java or I just …

Alright so my problem is I am getting an error that says undefined reference to all of my functions related to DoubleLinked, DoubleLinked<string> dict, dict.add, etc. If anyone knows why that would be great. Thank you. Oh and if i add () to DoubleLinked<string> dict then i just have undefined …