Software Development Forum

Hi Guys, There's something bugging me in the past 2 days. In Doubly Linked Lists, when will a Node get comepletely deallocated? is it when both **Next** and **Previous** references points to **NULL**? forget about the class and the method **remove()** and such. Let me make an example so you …

This is my solution for generating prime numbers. With this code hopefully you can generate prime numbers with incredible speed. The generated numbers will be stored in a text file titled as "Primes.txt". I have a dual core machine, but this program does not support dual core architecture, so it …

Hello, The program below selects two shapes at random from a choice of four shapes (line, rectangle, oval and rounded rectangle) and draws them onto an applet. Once six such shapes have been drawn, the screen is cleared and the above process continues indefinitely. The issue I am having is …

I am not able to understand the concept of virtual functions. When a member function of base class is redefined in derived class,the redefined function can be used to get desired output. Then why there is a need to use virtual functions? For instance, the following two codes produce the …

please tell me what is the condition to use here.... if(CONDITION) printf("HELLO"); else printf("WORLD"); ok frnds now i want the output as HELLO WORLD

how to access a web service from a mobile POS Device application in c and to store the accessed data in the device to use it (like printing bills for a collection) when it is required.can anyone please give any guidance for the above requirement iam totally new with POS …

Could you please help me how to create a four in a row game in C? Thanks!

Hi! I am trying to teach myself C# and basically I have been reading books and online materials to help me but I think I need to really be more hands on with it to really have it sink in. Any ideas on websites or software that I could get …

hi there, i have a code to open an excel file and get the information from the excel file, but how can i get the used rows in the excel file appreciate a lot if someone could give a tutorial or some guidance thankx

I have been struggling with this for 4 days - Please help. I have attached a copy of my code with the hope that someone here can give me some insight as to what I am missing. (This is a homework assignment, so please keep that in mind. I am …

This code to save, Edit and delete data in VB.Net using SQLServer as backend. this code is continuance from my previous post "Show Data in DataGrid with VB.Net 2003 and SQLServer 2000". so i didn't write code how to connect SQLServer 2000 with VB.Net 2003 cause this already in there. …

I am trying to run a program from python command line. I installed python on D: drive. PLZZ help me in fixing this problem.

[COLOR="Green"] hi every body i'm a new user in this site , and this term I am doing graduation project .. So , I wanna ask some questions in programming .. first one : how to connect between 2 computers via wireless ?? second : If the connectivity between the …

While at work i had nothing to do so i wrote this simple python script that uses the dbm module to store user information its not perfect but im sure someone will find it helpful.

In Xcode how does one create a header file? and what should it include? or does xcode create the file and use the information from the .c file to create the .h file

[B]Hello all..[/B] is it possible to create my own simple programming language in c++? complete with the compiler,editor and the libraries.. just a basic model where i can write simple instructions,save it with my own extension and run atleast a few simple algorithms..

Hi guys, I am a novice in C programming, and would like to ask you for help as I've started studying a computer science at university just few weeks ago. All I need to do is write a math function "pow(double x, double y)" without using any of functions in …

The program says it's stopped working after I input the first number... #include <iostream> using namespace std; int average(); int main(){ char answer; cout << "Average calculator." << endl; cout << endl; cout << " Enter a stream of positive numers (0 or above)." << endl; cout << "Enter a …

Hi. I'm fairly new to VB.NET programming, and i'm currently developing an application for the sake of experience. What i know about Visual Basic programming might be considered dangerous, but none the less, i'm trying. I'm having difficulty getting past the idea of how to update a record in a …

This is a factorial program which uses array to calculate large factorials. The problem is sometimes if I enter 1000, it gives the output but stops working there after. I tried it with 2000, 3000, it works fine. I cant understand its erratic behaviour? Is there any problem with my …

main() { FILE *file = fopen ("COMMAND.txt", "r"); FILE *file1 = fopen ("LOG.log", "a"); if (file != NULL) { char line [255]; /* Max line Size*/ while (fgets (line, sizeof line, file ) != NULL) /* Reading a line */ { char first[10]; if (sscanf(line, "%9s", first) ==1) { fprintf(file1, …

The GUIFlowLayout is giving me some trouble, the GUIFrame works fine. I have copied this from the Java programming book which I am using (Introduction to JAVA, eight edition, by Y. Daniel Liang). I get red error lines under 'setLayout', all of the 'add' words, and all the 'setTitle, setSize' …

I'm do program that when i press by mouse in any cell in table that print the cell position in a text field but i have a problem that's do nothing need help plz note ( I'm use jfram form and drage in it jtable and jtextfield ) [CODE] public …

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This snippet allows one to implement an equivalent of a `__getattr__()` function in a python module. The module can then define its own way to lazily import abitrary symbols. For example the module can contain infinitely many names or load values from other modules on demand. There are many implementations …

How can I programatically and accurately detect the touch/slide made by a user's touch on an android phone? I want this to be used as suppose I have two android devices synced with each other. Both of them have anything opened suppose pdf file, music file video file. Then if …

hii i am a beginner in c++ and i have got an assignment to do. below is my code and i am unable to execute it so can anyone help me out !! please !!! I am confused on how to replace the room no. in change_room() function and case …

The following suggestions will help the process of answering threads in the most efficient manner. 1. Do not hijack other member's threads, you will not get replies, instead start your own question. 2. What have you tried? We are not here to mock mistakes and showing effort made will make …

Recently bought "Regular Expressions Cookbook 2nd ed." and wanted to share my findings. The book is divided into two parts. The first part (3 chapters) describes tools, skills and programming. The tools chapter shows you what's out there (including his own software). The skills chapter is a tutorial. It describes …

Hi all, I was looking for a way to execute windows batch file from java code, and I was able to do this with the following code. [CODE] Runtime rt = Runtime.getRuntime(); Process proc = rt.exec("cmd /C " + "path" +exec.bat"); [/CODE] The batch file refers to some other files …

Hello friends, I'm a Computer Security student. I need some opinions for my Final Year Project idea. Im planning to create an application on VB.NET which protects a network from unknown users like hackers by filtering their MAC addresses/Hostname/IP. The application will work similar to the software inside the modem/router …

Hi guys, I've got the program running, but not as how the instructor requested. The professor wants us to ask the user for a text file and classify the data accordingly. Example: E = Enter L = Leave So if I have a text file with the following info E …

This is a simple hangman game that I wrote using my beginner python skills. Though this game is playable, there must be lots of things I must've been doing wrong or the methods I'm using here may be not so pythonic. So I want some suggestions on how to improve …

I saw a thread here and didn't want to gravedig. I am a member of Hackforums.net, but no one there will help me. The code I saw involved multiple IFs inside a FOR loop. Now my question is, is there a working Caesar cipher I can refer back to when …

What Can I do so as to stop compiler not to do padding in the structures ? is there any pragma or something like that which i can use ? thanks in advance. now, "ANY" response will be appreciated. :-D

There are N horses in the stable. The skill of the horse i is represented by an integer S[i]. The Chef needs to pick 2 horses for the race such that the difference in their skills is minimum. This way, he would be able to host a very interesting race. …

hi.... Let F be the matrix 1 1 1 0 Then F^n (2x2 matrix multiplication) equals F(n+1) F(n) F(n) F(n-1) because: (F(n+1) F(n) ) (1 1) = ( F(n+1)+F(n) F(n+1)) (F(n) F(n-1)) (1 0) = ( F(n)+F(n-1) F(n) ) Can anybody tell me or give me the hint that how …

Dear all, I have one question arise in my mind while i am making my project. I have one column "AGE" is there.So many values are stored in this column ranging from 0-100. I also have find frequency of each age like age=5 comes how many times in my column …

Eg.407 4*4*4=64 0*0*0=0 7*7*7=343 now 64+0+343=407. Any number which satisfies the above condition is called as Armstrong

Hi I am trying to get a tkinter UI to allow me to do two things. * When I right click in a Treeview widget and my mouse pointer is over an item I would like the item to be selected as if the user clicked on it * When …

Being an experience programmer (fortran and assembly), I decided to modernize my resume and tackle c. In the process, I learned that like other programming languages, there were many 'versions' of c. Several course books I read use the conio.h header file. I was looking for a substitute for conio.h …

I do have a function in C to give me a unsigned short random number from 0 to 65535. How can I make it to give me a greater number without much calculating? (r * 65536 + r) I've made a function in C to do that for me: static …

Use regular expressions, regex, to create an efficient textbox that only takes in digits as input.

Hi I have a task to do. I will just brief it in a sentence, I have a file of 20000 lines. Now task is to recognize number of similar lines. ex1 : "The quick brown fox jumps on a lazy dog" ex2 : "The quick brown dog jumps on …

There was discussion thread http://www.daniweb.com/software-development/python/threads/424953/polynomial-division for class based implementation for polynomials, and I developed a version utilizing the magic methods to enable operation with normal arithmetic operation. I only inherited sequence structure from list type. Interoperability with scalar types is not implemented to avoid too complicated type checks of the …

Hi! Anybody know how to interface a transmitter of RC helicopter with the parallel port? The transmitter has joysticks. I have to control it with my GUI in visual basic. I'm not good at it. Please help. Thanks!

I want the btnLogin_Click event to verify the username/password from the ms access database, if it matches it will take them to a certain page, if not it will give a message that user/password is incorrect try again. I really don't know where to start, can you please help first …

hi.. am quite new to sound applications in java. I want a audio control panel as output. i.e. if i click play button audio should play, if i click stop audio should stop and if i click pause audio should pause/hold until the play or resume button is clicked. i …

Hey guys! I've started writing a 2d platformer game some days ago, and I'm really enthusiastic about it, but I already failed to live up to my own expectations: I just cannot possibly think of a way I could make my character jump. I used the MVC desing is why, …

can someone tell me how to get the values of the dynamic texbox created..on my first code, i munaully put textboxes..but resulted to non efficient code according to my prof..so i found a code that dynamically create texboxes, but my problem now is how to get the values of them. …