I'm studying the C Language, None of the documents I'm reading covers returning values from a function. They state that the function sends the valve to the caller but that is the only info I have. Do I have to create a varible with the name of the function I called and is it stored there?
View 14 RepliesGroovy is an object-oriented programming language for the Java platform. I do not have experience in Java, only perl and shell scripts. Recently I have been asked to maintain a software written in groovy (also to make enhancements). So can I learn groovy without knowing java language. or isit I have to learn java before venturing into groovy.
View 1 Replies View RelatedCode:
Why are basic math problems returning 0? I know that Integers can only hold whole numbers, and it had the exact same problem when I used floats. I am using GCC 4.4.4.
I am unable to find a description of alsa's programing language, this sort of stuff:
[Code]...
I need to know what, for example, 'ttable' means and what is its syntax. This seems to be a state secret.
I wonder why arrays in the C programming language are pointers to the first element of the array, not the first element of the array itself?
View 14 Replies View RelatedI have machine that I used to VNC to on my network with Remote Desktop Viewer from my Fedora 12. When I first connected I checked the checkbox that I wanted to store the pw. Now the pw on the other machine has changed but Remote Desktop Viewer does not ask for a new password, it just gives me a black screen, like I am connected but I can't see anything. I'd like to know if anyone knows where this pw data is stored on the system so I can start fresh. I already tried uninstalling Remote Desktop Viewer and installing it again.
View 1 Replies View RelatedI got to go to a competition and I have to use debian and win server 2008 in that comp. With the smallest (about 300MB) image, I couldn't add functions because the computer isn't allowed to connect internet, no APT. then, do I need to download all the images? I saw that full image was really huge.
View 3 Replies View RelatedA friend of mine is starting a school this school has computers. I'm assuming windows but that's not that point at the moment. He asked me about setting a main unit that held the kids info and their work complete on the computer. Effectivley what I am asking is how do I set up a server to allow many multiple (at least 50 user at a time) each with their own folder as their home (or desktop I guess is a better word). He also wants a person to be able to add themselves as an account similar to that of signing up for something (ie facebook twitter you know). Oh and ( I almost forgot the most important) how to setup the server to allow the other computer to boot to it via the network...
View 3 Replies View RelatedWhere are the other BASH commands/exe stored? If the commands are part of the exe of BASH than ls would not be in a path, correct?
View 11 Replies View RelatedIs there any framework available for network programming in c language just like POCO in c++.
View 1 Replies View RelatedI have the following function, and it appears to set the var correctly, but then tries and executes the line as a command. Anyone know how to keep it from doing that?
PHP Code: SMALL_FILE_PERCENTAGE=88
MEDIUM_FILE_PERCENTAGE=10
LARGE_FILE_PERCENTAGE=2
[code]....
I am facing issue in my OPENSSL code. I have written openssl client. It sends request to the host and receives response for that request.
My problem is, it connects, sends request successfully to host at first time only in sencond attempt it fails on SSL_write(). where SSL_get_error() returns SSL_ERROR_SYSCALL error.
In that ERR_get_error() returns 0. man page shows "If ret == 0, an EOF was observed that violates the protocol".
Code Snippet.
w=SSL_write(SSLRequestData.ssl,c2s,c2sl);
switch(SSL_get_error(SSLRequestData.ssl,w))
{
case SSL_ERROR_NONE:
if(c2sl!=w)
[Code]....
Let say I would like to check /etc/profile whether defined umask 022
umaskcheck=$(What to defined here?)
if [ What to define here? ]
then
[code]....
I need to call a function that takes a string array as argument, declared like this:Code:int someFunction(/* some parameters... */, const char* s[]);I'd like to know how to allocate memory for the string array. I know a string is an array of chars and an array is a pointer to the first element, then a string array should simply be a two dimensional char array. But is it a single memory block where all strings are stored consecutively?? Or is it a base vector where each element is a pointer to a separate memory block that contains a single string?More specifically: should I malloc() a single memory block large enough for all the strings? or should I allocate separate blocks for each string plus an extra one for the base vector?
View 5 Replies View RelatedI'm venturing into the world of OpenGL, but in the process of writing my graphics library I ran into a problem... My code is:
Code:
#include <stdio.h>
#include <stdlib.h>
[code]...
I am working on software that is to run on a variety of linux machines where changing the os/version is not an option.My software uses the inotify_rm_watch call, and this is occassionally failing. In every case the operands are both valid, yet the result is EINVAL. This appears to only occurr when a watched file is deleted, and the read command on the inotify yeilds two events IN_DELETE_SELF AND IN_IGNORE (at the same time).I have seen a few messages detailing this same scenario - but no workarounds.
View 7 Replies View RelatedIf I have a Query that returns columns where some of the values are NULL, is it possible to tell SQL to return all the NULL values as empty strings instead of the NULL datatype?
If the solution is vendor specific I am (unfortunately) using a Microsoft 2008 SQL server.
Example:
Code:
Select * from imaginary_table where id = 1
Might return:
Code:
Id: 1
Name:xyz
[Code].....
int GetTime(struct timeval tv)
{
gettimeofday(&tv, NULL)
printf("%d
", tv.tv_sec); /* here is the right value */
return 0;
}
[Code]....
What happend? struct timeval has a self timer?
where the printk messages are stored when we call a insmod? I'm using Slackware, and I think my distro can store these messages on others place.
View 3 Replies View Relatedtell me some sites for learning programing language Because i feel confusing for learning C programing language now I got so many questions by my studing and i want to solve them by myself too.
View 14 Replies View RelatedI am running shell command through C program using system() routine.
I am executing "opcontrol --status" an executable using the this routine and I get the following error. access: unix error (2) No such file or directory
But when I give the complete path to the executable it runs perfectly.
The executable is installed in "/usr/local/bin/" And the path variable has this path.
I need to create a script that returns a list of the users who have never changed their password from /etc/shadow. As I know on linux there is a command "chage" used for find last password change.
View 2 Replies View RelatedMy name is Simon and I have recently moved Ubuntu 10.04 from Windows XP. I am a programmer with a few years under my belt using a range of languages but primarily Microsoft Visual Foxpro. This program was very useful as it allowed me to access tables stored on my system and create programs to manipulate data in a wide variety of ways. Programs could be hobbled together, refined then placed in a menu system.I have been looking at a range of packages to use that would (a) allow me the same interactive experience, (b) allow me access to xbase tables (especially as most of the packages and business clients I have use this format), and can be used to create a GUI program. Ideally the package could create programs that can run relatively easily on Linux and Windows. Why, you might ask? Well unfortunately I have not been able to ditch foxpro, it is kind of unique in its abilities. Consequently I am using XP in VirtualBox to do some of my analysis and report production. I also still run Windows on my slate computer, which is used in the field to collect data.I have investigated Python/Jython, Java, Bash, and a number of others (e.g things that interact with PostSQL, MySQL, etc) but happily admit that I am overwhelmed with alternatives. That said, none quite match my relatively simple requirements stated above. The biggest problem is the lack of interactive data manipulation -- e.g. type an SQL statement and have the result appear immediately, that sort of stuff.
I need a language with strong data access, manipulation and reporting capabilities. I have sizable tables/databases containing millions of records and at present most queries take only a seconds using Visual Foxpro. Most of my investigations push me to the MySQL and similar data repositories, but all have their own format. Essentially I need to import all my data into their system before a language can access the data (note that there are copyright issues preventing this in some situations) - aren't there any programs that can access dbase or foxpro tables directly?The programming language also needs to be relatively mature. I don't want to spend all my time defining window sizes and button locations. Editors/Wizards that help design a GUI interface is preferable. It is imperative the language also has strong string, number, array and table access capabilities. Code should also be intuitive and easy to read. A lot of the languages I have reviewed are not intuitive. To me, functions in the format substr(string, start, lengthsegment) is logical and easy to follow. Things like Str = ${str//search/replace/} are not.
I suppose while I am listing preferences, an interpreter like eclipse would be desirable to help maintain code and format it as you go. Some sort of intelligent feedback as you construct a code snippet showing you what alternatives are available would also be valuable.At present I am leaning towards Python with Eclipse as the program manager, but as stated this setup does not really provide an interactive experience and does not appear to naturally interact with dbase. It appears this option would require considerable setup to get working.Java + Eclipse has been suggested before, especially as it takes away the need to worry about operating systems, but most of the packages I have used based on this language are restricted by library development by Sun Microsystems. The file chooser is a classic example - a known bug has been registered for this library for 5+ years and the problem has not been fixed.
I am looking for a specific forum for the R programming language.
Some thing like the LQ is for linux, that will be nice.
Or something like the cplusplus is for c/c++.
I want to know which is the best scripting language right now and what you guys think its going to be the best or most used in the future, that is, in about 5-10 years. Take into account system administration and applications. This are the languages i had in mind, add more if you think other scripting languages are better or worth considering.
View 14 Replies View RelatedI use Eclipse 3.5 from Ubuntu 9.10 repository.Please, how to use Eclipse to programming with C++ language?
View 5 Replies View RelatedHow to install IO in 64-bit Ubuntu MM? There doesn't seem to be a package for it in the repos and it doesn't like compiling on a 64-bit system. I have used various internet tutorials but most don't work on AMD64.
View 2 Replies View RelatedHow to create a database using c language it includes structures, pointers, arrays and switch..
View 4 Replies View RelatedIn the code segment below is a for loop I am having some considerable difficulty with. It just keeps iterating endlessly and totally ignores the 70 times limit specified. I can't ever remember having this problem before and am absolutely Clueless.
Code:
for ( x = 0; x < 70; x++ )
{
fputs ("CSN00", target);
fprintf (target, "%d", userid);
[Code].....
We have to (re)write a bunch of scripts to download files from remote ftp servers, where we won't know the names beforehand; move the files to an archive folder on the FTP server; copy the files to the correct servers on our LAN; and log the file information in Oracle.Our current scripts are for a windows product called ScriptFTP that provides a nice little language. It does everything except the logging, but we're wanting to get rid of Windows.
I have recently been given the job of maintaining the code, and I'm looking for a good language for simple, robust ftp scripts that will work on Linux. We have some customers with remarkably unreliable FTP servers. If necessary, I can write another program to handle the logging to Oracle. I'm usually a C++ developer, so a similar syntax is a bonus. I also want to be able to hand this over to an entry-level programmer later.
So far, I'm intrigued by PHP, but I've hardly had a chance to look at it for any scripting. I like the idea of being able to loop through the files individually and even be able to skip over anything that looks like it's currently being written (either based on the file name or date/time). I've thought about writing something in C++ that would take a simple config file instead of a full blown script. However, I don't want the maintenance, unless someone writes a quality FTP library that is inexpensive (hopefully free) for commercial use.