Software Development Forum

Hello, I am trying to develop a program and I am stuck on a few portions. 1. I need the program to calculate the gradient of a user entered function. 2. I need to multiply matricies which I think I know how to do but the matricies need to have …

I am not sure how to accomplish this, but I am trying to take dates from two fields and using the current date show the progress percentage in a different field. So, if past date is Jan 1st, the current date is "x", the future date is Jan 11th. How …

I need to develop a piece of code in an old legacy Visual C++ 6.0 system. I am invoking a stand-alone executable via a system call. This exe is supposed to create a file if processing goes OK or not create one if it fails. The name of the file …

Hi there, I want to learn how to log in to websites using python 3.1, I've searched for any info and couldn't find. The closest thing I found was an example for older version of python, which I couldn't learn much from it cause the functions are not used in …

Hi, apologies since I feel this is a very basic question... I need to feed a function that takes a few arguments, and I'm having trouble with one of the variables: my_function(..., ..., const char* const*, ...) I'm trying to initialize that variable like this: const char* const myVariable[] = …

So I have figured out how to receive output from an application using [CODE]process = subprocess.Popen("my_app", shell = True, stdout = subprocess.PIPE, stderr = subprocess.PIPE) info = process.communicate() [/CODE] But how do I SEND info TO an app? I have an application that asks for a yes(y) or no(n) confirmation …

Hi, We're trying to monitor our logs, and would like to be alerted in case of repeated occurrence of a certain field ( ie PY1011 ). We'd like the script to be run every half hour, which will scan the log file, look out for repeated of any user, if …

Hi, I want to take a command with its options as input and execute it with one of the exec() functions. My approach is to take input first and put it in an array by dividing with string tokenizer. Then I call execvp() which takes the array including the command …

I'm relearning (OK, "learning" would be a better term since I never really understood it the first time) piping. My end goal is to execute some shell commands like "ls", get the results into another variable, and do some stuff with it. I imagine I'll end up using commands like …

Hi Guys.. I have a problem in tellg() function.. When I open file in Binary mode , It returns true value,but when I open in default mode it returns false value.I can't understand what has happened ...(the problem is in this code) : [CODE] for(int t=1;t<size;t++){ char ch=input.get(); codes_list[t].symbol=list[t].symbol=ch; input>>list[t].q; …

hi. How to save a bit on the physical disk in the C + +. ofstream write only file, and I would like to save the hard bits but I do not know how to do it

For this content of the file/stdin: [CODE] a 3 W 10 A 100 , 10 k 7 . 3 I 13 [/CODE] I have written the following code [CODE] while (k-- > 0) { scanf(" %c %d",&c, &p); printf("c: %d p: %d\n",c,p); } [/CODE] if I change the format string …

When you have a function and need to scan for 2 different numbers, should the scanf be in the function or in the main() and why?

Could someone explain where and when you would use << and >>. I read these 2 articles but don't really understand them. [url]http://en.wikipedia.org/wiki/Operators_in_C_and_C%2B%2B[/url] [url]http://en.wikipedia.org/wiki/Arithmetic_shift[/url]

Hi, I'm trying to create a program that reads in a line of text. For some reasons, when I try to run the program, "Your input has ---- non-blank characters." comes up under every words. I want it to just come up once at the end. Any help will be …

I have a class hierarchy in which the base class is abstract. Each derived class has a set of private members which describe parameters that control how the class processes data. I want to enforce implementation of a setParams() function across all derived classes. However, because the parameters for each …

I have a question, for example I input something on edit and in that time when I'll click on search button it will show find message, but it shows mysql error :'( why? what I am doing wrong in this code? :( [CODE]HWND edit; char t[MAX_PATH]; char query[MAX_PATH]; GetWindowText(edit,t,MAX_PATH); mysql_query(conn, …

hey everyone, i just started working with java graphical user interface, i found some source codes from the web and trying to play around with them and i am just unable to understand it fully, the code is well commented and easy to understand it is a simple game called …

With my code below how would I either ignore or remove decimal numbers? I tried typecasting it but that messed up my code. I can't think of any way to make a loop to accept only integers either :(. I don't understand why the scanf is accepting decimal numbers when …

If I do this code in the command line: [code=python]f = open(fl, 'r') txt = "" for line in f: txt+=line f.close() print txt[/code] I get all the output for the file fl, but if I do: [code=python] def editfl(self, fl): f = open(fl, 'r') txt = "" for line …

Hi, I need to have a grid view that will select only few columns from two tables in the database and show them. I have my own data layer implemented, i.e. I have functions that are pulling all the tuples for a satisfied condition and returning them back to me. …

Hi all, I have to make a function which take as parameter two arrays and merge in one new. For example int array1[][] = {{1 , 2, 3, 4}, {2, 3, 4, 5}}; int array2[][] = {{5 , 6, 7, 8}, {6, 7, 8, 9}}; To take as result arraynew[][] …

Hi, i have a problem, i am using a library given by my university to create a game, these are my classes and cpp files, and i am getting this error: error C2512: 'Board' : no appropriate default constructor available, pls help. [code] class Board { protected: GWindow &Gwin; int …

kindly give me the source code for NFA to DFA conversion.

I am writing a program that computes the tax and tip on a restaurant bill for a patron with a $44.50 meal charge. The tax is 6.75 of the meal cost. The tip is 15 percent of the total after adding the tax. I have to dislay the meal cost, …

Hi, all. I'm pretty new to C++, and I think I'm getting the hang of it, but there's a problem with a program I'm writing and I just can't seem to fix it. The program's supposed to print a pyramid like this: [ICODE] 1 1 2 1 1 2 4 …

The C++ [i]string[/i] type can be converted to a [b]const[/b] null-terminated string using [icode].c_str()[/icode] for interoperability with legacy C code. However, this poses a potential problem when mixing [i]std::string[/i] with functions designed to mutate a string in-place. a const_cast to get around this issue results in undefined behaviour, since the …

i need to play a system sound like in a chat program i am using [CODE]Interaction.Beep[/CODE] at the moment but would like to use a different sound. any thing i could not find any thing on the net

I have 2 frames (classes exactly) customer & items... when a button clicked (button 'BUY') on customer frame it navigates to items frame. mean time i made customer frame [B]customer.setEnabled(false) [/B]. i called to item frame by simply creating an object of item class. then , when i coming back …

hello Everyone, I have a problem with type casting. My code is [CODE] zcpr.next_in = FilePtr;[/CODE] next_in is a element of the zcpr structure where its type is and FilePtr is a void type pointer. zcpr is a z_stream type structure and next_in is a Bytef type pointer. This code …

Hello, My problem is, I am trying to format a number into a certian format. The number is 100072305608500 (this is the exact copy from what was passed in) the format it should be in is 100/07-23-056-08W5/00 I am using [CODE]return (string.Format("{##0/00-00-000-00W0/##}}", Convert.ToInt64(wellLocation)));[/CODE] where the # are optional digits. I …

Hello again. :) I am comparing two nodes (some of my other methods need this method). I am having a problem with this method because it returns false even though both nodes have the same content. What are the problems of this code? Any suggestions? This is the critical part …

I need simple timer that should not mess with the threads,and doesnt use Sleep(). I need something like this: [CODE]int main(){ function1 { whule(1) { // do stuff execute evry 30 min function2(); } } return 0; }[/CODE] So function1 and while(1) must not be slowed down and need to …

Hi, When I want to run a simple project in NetBeans, I receive an error : [quote] ! was unexpected at this time. c:\MinGW\bin\make.exe: *** [.validate-impl] Error 255 BUILD FAILED (exit value 2, total time: 219ms) [/quote] My eclipse is working properly with this MinGW installed on my computer . …

I am trying to render multiple scenes in different window. I am confident that the data is correctly read in from the .txt file and used to initialise the Beam and Segment objects (each Beam object comprises >=1 Segment) However when I attempt to render the scenes the program tries …

When we copy/cut and paste a file a dialog box opens showing the process of coping and pasting files it includes only cancel button, but I want to add "pause" & "resume" button also there.... To do this how should I write a program, on what I should write the …

This is what I'm gonna do and I know I havnt got far, but have been searching on google for 5 hours and dont have the solution yet, Your little sister / brother asks you to help her/him with the multiplication, and you decide to write a java application that …

hi everyone...... am right now working on a project which needs to connect to vlc player from code....does libvlc support this or else if there is any other please let me know...... my another doubt is there any possibility(like any available APIs) that takes video file as an input and …

Hi Friends... I use Delphi 2010 application.. To do some calculation I load array of numbers into string grid but some times i have to make some of the rows inactive and do the calculations..Can any body help me out with a code to disable selected rows and do my …

hei friends can anyone tell me how to upload excel file to access in vb.....if u give code it will be very much helpfull to me, thankx.

hi i created a new OutlookAddIn project. the project adds a custom toolbar button to outlook. when run the project in debug mode, i see the custom button and everything works. i want to install the poject in another computer, i added a new SetupProject to the solution and targeted …

Hey i have a program thats due sunday and my teacher doesn't really teach that well....so i'm kinda confused and need help. problem: read a file of positive intergers and then print each lin and then print each number in the line (i've done this part) this is where i …

I have << overloaded to write to a file, however I get an error when I try to use it in main. I tried calling the actual write method. Is the SpareTable that operator that is failing. I already checked the .h and .cpp parameters and that all my #includes …

Hi guys.. In the huffman algorithm I have made an output file contain 0 and 1.. how can I say to compiler that these 1 and zero are bit no Byte. and how can i make the real Huffman output that its size is lesser than the initial file, What …

hiiii all, i want to create a cube in vb.net through code.. and even i want to retrieve cube created in anlysis manager in vb.net so i want connectivity code... please help me!!!!!!!! thanks a lot!!!!!!!!

Can someone tell me why my compiler won't compile this code and how to fix it? [CODE]void gcd(int x, int y) { if (x > y) { int c; while(1) { c = x % y; return y; x = y; y = c; } if (y > x) { …

Hi, I've a really huge recordset having lacks of records. For some reasons I've to take all the records into an array (using loop) to do some processing and then put it into a grid. Now since the recordset is huge the memory is not able to handle the array …

hey, i was writing this program for complex number calc and when i run it ,it never returns me the right values.. so can u plz make necessary changes where i m wrong.. YEAH AND ONE IMP THING TO TELL U I M BEGINNING WITH POINTERS AND I LITERALLY SUCK …

I've been trying to make a synthesis game for my Organic Chemistry class, but when I try to draw some buttons on the screen I get a segmentation fault. I am using some functions for loading taken from Tim Jones's tutorial. I have built a Button class that has the …

Which is the most efficient way of creating a string object in java? [icode]String s="helo";[/icode] or [icode]String s=new String("helo");[/icode] in terms of memory usage? Thanks in advance...