C is a general-purpose programming language

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font configuration warning [duplicate]

when I was doing c program in Ubuntu 12.04 , there is a font configuration warning shown by terminal. What should I do? shayna@shayna-Vostro-3446:~$ gedit hello6.c Fontconfig warning: ...
0
votes
1answer
19 views

GCC Compiled program not running in a new Window

What i am Doing? I have created a simple c Program that runs and executes a system Command the code is as follows #include <stdio.h> #include <stdlib.h> #include <string.h> ...
1
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0answers
25 views

Why does sudo prevent catching SIGTSTP (Ctrl+Z)?

This program is written to catch SIGTSTP (Ctrl+Z) and bypass its normal effect, printing a message and returning to its normal operation instead of allowing its process to be suspended: ...
0
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1answer
35 views

Setting up lubuntu to access /usr/src/linux-headers-3.1.x.xx?

I need to access a block of memory assigned by a FPGA to a PLX chip. Now I dont think that will be to much of a problem accept when I try and use the /include/linux headers they seem to be somewhat ...
1
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2answers
46 views

.desktop file doesn't execute a script, works fine when run by hand

I am having problems with my .desktop files. I have a shell script that constantly watches for a file to be put into the "Downloads" folder. When a file is put into the folder it automatically ...
0
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0answers
16 views

Extracting a statically linked library

Is it possible to extract a statically linked library from an executable (e.g. turn it into an .so file), when I have the .h header file declaring the symbols? I also already have the .so file, but ...
0
votes
1answer
25 views

What are the files needs to be edit to add a user? and what to be write?

I am trying to write a C program to add a new user to my Ubuntu 14.04. I edited 1) /etc/passwd sachin:x:65535:1:sachin:/home/sachin:/bin/bash 2) /etc/shadow ...
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1answer
32 views

how do i run main file which function is store in another file and also the header file too?

// mainheader.h int square(int b); // maiNfunction.c #include"mainheader.h" #include<stdio.h> int square(int b) { int y; y= b*b; return (y); } //=====maiN.c file ...
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0answers
25 views

How to install and use (link) librsync library

I installed the librsync library using: sudo apt-get install librsync-dev librsync-dbg. But then how do I link this library statically? I Tried: gcc -o my_prog my_prog.c pkg-config --libs ...
0
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1answer
32 views

how to implement the functions which are defined inside the conio.h

I wanted to use the conio.h header file in one of my C codes but as we know the header file is not available for unbuntu, what should we do if we want to implement the functions if the header file ...
0
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1answer
126 views

Should `arm-none-eabi-gcc` include a `stdio.h`?

I'm trying to build a simple example from the SDK for the TI CC3200 (Cortex M4), but when I try to compile it complains about stdio.h. make CC ../main.c ../main.c:45:19: fatal error: stdio.h: No ...
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2answers
60 views

Newbie C programming question [closed]

Can anyone explain why the output of this code is 2? I mistakenly thought it was 3. int array[] = {1, 2, 3}; int *address = array; array[0] = 2; array[1] = array[2]; array[2] = *address; ...
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0answers
36 views

Ubuntu 14.04 freezed when too much memory in malloced

I am trying to run a C program which mallocs the memory as per the input given by user. Whenever I input something as big as 1000000000 rather than returning NULL value, my Ubuntu 14.04 machine ...
0
votes
1answer
56 views

Compiling C code for ARM processor on Ubuntu 12.04

I am compiling my simple "Hello world" C code using the following command: arm-linux-gnueabi-gcc-4.4 test.cpp -o test It generates an error: arm-linux-gnueabi-gcc-4.4: error trying to exec ...
1
vote
1answer
49 views

Getting time in ubuntu [closed]

#include <sys/time.h> #include <stdio.h> int GetTime() { struct timespec tsp; clock_gettime(CLOCK_REALTIME, &tsp); //Call clock_gettime to fill tsp fprintf(stdout, ...
0
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1answer
41 views

ALSA prgramming in C

I'm using a C program that help me recording from my audio device here is the code : /* Use the newer ALSA API */ #define ALSA_PCM_NEW_HW_PARAMS_API #include <alsa/asoundlib.h> int main() { ...
-1
votes
1answer
40 views

unfamiliar codes in iw [closed]

Recently I am trying to understand how the codes in iw works. In iw.h, I encountered the following: #define __COMMAND(sect, name, args, nlcmd, flags, idby, handler) \ static const struct cmd ...
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0answers
300 views

Cmake fails while configuring OpenCV

I'm trying to buid OpenCV and use it in Qt. I have installed all required packages for OpenCV and Qt, after that I tried too run cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local ...
2
votes
2answers
237 views

ls system command not showing terminal colors

I've just been fooling around with some code in C, an example of a really basic program is as follows which just, obviously, lists the directories using the ls system command. #include ...
2
votes
0answers
125 views

gstreamer pulseaudio echo cancellation

I'm implementing a voip application using gstreamer, i use the example of the rtp in the plugin-good! i want to implement echo cancellation, i couldn't use the speex echo canceller with gstreamer ...
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0answers
12 views

Library for Audio files

I have written a project in Matlab, using some signal processing (fft,convolution,PSD etc), and I have to put it on ubuntu , for that I need to write a project in C, and I was wondering if there ...
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0answers
21 views

How to access terminals with their names through C program?

How to access a terminal through its name in C program? I can only access the current terminal in which I am running the program through system() function. I want to access multiple terminals ...
0
votes
1answer
204 views

Error running C program compiled with Geany IDE Error Code: 127

I installed Geany IDE via Ubuntu Software Center. Wrote a hello world prog in C and it compiled successfully but when i tried to run it, it gave me this error: ./geany_run_script.sh: 5: ...
0
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2answers
894 views

Are there drivers for OpenGL 4.3 for [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series] (Ubuntu 14.04)

I want to be able to do opengl4.3 c/c++ programming, the [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series] should be able to support it, I just don't know what drivers I have to install Also I have ...
5
votes
1answer
5k views

fatal error: sys/cdefs.h: No such file or directory|

It has been weeks that i am trying to use Code::Blocks IDE to program Atmega16, however, i am hindered by the following error while compiling/building the program in C::B ...
0
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1answer
326 views

How to enable c99 and c11 on gcc?

When I compile the following code it gives compilation error that error: ‘for’ loop initial declarations are only allowed in C99 mode for(int i = 0; i < 5; i++) and to compile your code use ...
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0answers
40 views

'__FDELT' and '__FDMASK' not declared in this scope (posix_types.h not included)

I'm running Ubuntu 12.04 LTS, 64bit version. I'm getting the following error when compiling a C++ program: ../elements/userlevel/socket.cc:477: error: '__FDELT' was not declared in this scope ...
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0answers
40 views

Calculating postfix expressions using stack [closed]

What is wrong with my calculate function? All other functions work fine but when I try to calculate a post fix expression, it adds some weird symbols to my stack. void push (char operand){ ++top; ...
0
votes
1answer
15 views

Upgrade restart fail

Upgrading from v13.04 to 13.10, all went well until "restart to complete"--screen did not come up for restart (Nvidia GeforceGTX650). I tried various suggestions, but now cannot get even Grub menu on ...
7
votes
6answers
395 views

Source code formatter/indenter

I'm using Ubuntu 12.04. I do not have any root or sudo privileges as this is a company machine. Is there, in a normal installation of Ubuntu 12.04, any terminal program that I can use to turn ugly ...
-1
votes
1answer
71 views

To check code execution flow of C program in ubuntu [duplicate]

Is there any software available in UBUNTU 13.10 to check line by line code execution of C programs.
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0answers
29 views

Open NFC Compilation - g_pNALBinding error while compiling microread/hal_*

for generating the server application using AARDVARK, to access the NFCC, when I am entering make command in this directory: core/porting/linux/client_server/server/microread/hal_cc_client . ...
0
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0answers
15 views

Installation failed for API

I'm developing an app for sending OSC messages working through the outlet port 4444 and I am using a C API call Liblo. Project page: http://liblo.sourceforge.net Normal install it by running the ...
1
vote
1answer
105 views

Kindly explain me this code of increment decrement operator [closed]

Following is the code that I run in ubuntu 13.10. Code:- #include<stdio.h> main() { int i=10,j=10; i=i++ + ++j; printf("i=%d j=%d\n",i,j); j=++i + j++; ...
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0answers
59 views

Capture hrtimer interrupts with linux kernel module .. possible?

I would like to be able to 'capture' an hrtimer interrupt with a linux kernel module and replay the interrupt at a later period in time. Any thoughts on how to go about doing this? Use case: A ...
0
votes
2answers
136 views

How do I get the pcap lib on Ubuntu?

I have a programming assignment where I need to use the pcap lib. #define _BSD_SOURCE #include <stdio.h> #include <stdlib.h> #include <string.h> #include <pcap.h> // <-- ...
0
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1answer
205 views

Compiling a C file through Gedit extrernal tools

Is there any way to compile and run .c files by using a shortcut key using gedit? I know its possible for java and C++, and I read somewhere that it is possible to do so using scripts in external ...
0
votes
1answer
56 views

What is kernel modding? [closed]

I want to take a dip in customizing linux kernel. As it's evident that linux kernel can be modified according to our specific needs. My questions are: What is kernel modding? How to perform that? ...
2
votes
3answers
222 views

IDE/Compiler for C or C++ Programming [duplicate]

Is there any software that supports on C or C++ Programming? Then, if it so, how to run, compile or debug your own code to display its output via terminal(linux/ubuntu) or cmd(windows)
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0answers
82 views

libipq not supported in Ubuntu 12.04 LTS

I have the requirement of altering packets as a part of my University's research project and came across two libraries. which are libnetfilter_queue and libipq which is the deprecated version. ...
0
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0answers
18 views

Int system call and 'int' within C syntax

I'm learning about kernels and I was curious if the int system call(in our case, in Linux) has any connection with the declaration of an integer in C and C-based languages. int n; Is an integer ...
1
vote
1answer
152 views

How to let a user execute a script owned by root? Setuid doesn't seem to work anymore

I have some bash scripts that I use with the user 'root' to manage iptable rules. The problem is that I want these things at the same time: The script must be owned by root Permissions must be 700 ...
1
vote
2answers
53 views

Compilation Help on Ubuntu 13.10

I have recently gotten into programming this is a small C code I started on. I am using Ubuntu 13.10. int main(int argc, char *argv[]) { puts("Hello world."); return 0; } Whenever I try ...
0
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3answers
2k views

how to compile a c program that uses pthread.h?

I'm a beginner and I'm new to Ubuntu. I just installed it and want to run a C program. I have no idea what platform to use or where to write the code. I need to use pthread.h header file in the ...
0
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0answers
213 views

Syntax highlighting not working in Vim?

Can someone help me out. I recently installed Vim for C development and would like to get the syntax highlighting on. I've tried various commands including "syntax on" but none seem to be working. I ...
2
votes
1answer
1k views

Installing a comprehensive LAPACK implementation under Ubuntu

I would like to ask how to properly install a comprehensive LAPACK package as e.g. is offered by the Gentoo package 'sci-libs/clapack' within a Ubuntu environment. I am not talking about atlas here, ...
1
vote
1answer
184 views

make file error, trying to install intel power gadget

I hope another Ubuntu user has tried to run Intel power gadget and knows what problem I am having. I am trying to install the power gadget, running the make file i get an error message: ...
1
vote
0answers
15 views

How to back up a folder in the C root file in XP.. only place the folder can be [closed]

I have a folder directly under C:/ that can only be located there in order to work. I have to back it up daily, I was hoping Ubunto would do that, but it keeps saying the file must be elsewhere (My ...
1
vote
1answer
353 views

Generating core files on Ubuntu

Recently I've been trying to enable core dumps on Ubuntu. I made a simple program, that would crash (it writes some data out of array). At first, core dumps weren't generated. This was because ulimit ...
2
votes
1answer
141 views

Which package to install to use C/C++ compiler with Eclipse

I want to develop C/C++ applications using Eclipse: should I install using sudo apt-get install build-essential or sudo apt-get install gcc