UNIX/Linux Programming - C++ Forum

Comile Error: Undefined reference :(

Hi guys. I am trying to write a simple c++ program using the g++ compiler in linux (debian) that can access a mySQL database, however I am getting some frustrat...

[6 replies] Last: You're welcome :) (by JoR)

by CodeBugs

Udev & Interacting With Devices

Hi, I'm trying to work out how to work with udev in my programs. I understand that this works in conjunction with sysfs mounting devices in the tree dynamica...

[1 reply] : I've not used it, but does this return the device type as a string? u... (by kbw)

by local breeze

Plugin for STB ( SET TOP BOX)

hello every one my knowledge in Programming is Equal to Zero so please forgive me if i write nonsense i have a receiver which is Linux Based and it has ...

[no replies]

by agoswami

Multi Threading Book

Hi, I start to learning threading and multi threading concept and looking for following threading book for better understanding. Thease book was reffered from...

[1 reply] : I will personally type out the second book for you, starting tonight... (by bigearsbilly)

by tsa45

use C++ to read and parse binary PPM file!!!

Hi is here any one knows how to use C++ to read data in PPM binary file?? My classmate said he can read the data into bool variable from the binray PPM fi...

[no replies]

by KVh

gdb does not detect segmentation fault

I have kind of a weird problem. I want to implement the boyer-moore string searching algorithm which I did and already works fine on windows. However it does no...

[3 replies] Last: Nevermind. it was a wrong malloc caused by the previous malloc stateme... (by KVh)

by sorinn

Matrix Multiplication using processes with fork

i have this code which is matrix-vector multiplication i want to change it to Matrix-matrix multiplication what change should i make? if you have the code ...

[2 replies] Last: I have an assignment and I need to put the software on a Linux system ... (by sorinn)

by StreetBallerX

How to get line of inputs and outputs in the following case

Hi , some help needed i have the following task: reads a sequence of positive numbers and prints out their binary numeral system representations. im done wit...

[1 reply] : Just to note that i have problem with this cuz the teached didnt stop ... (by StreetBallerX)

by m m

Graphics on Linux.

I have a question for graphics experts. I'm working on a fedora 12, compiling (gcc) and trying to understand old C++ code. (The code is a simulator. But tha...

[2 replies] Last: Thanks ! (by m m)

by heidiK

linux make files

Hello everyone. I am new to creating make files. I have been able to create simple makefiles for those applications which do not involve database but am unable...

[1 reply] : Try like this make liffe_runbreach-64bit I believe 'liffe_r... (by srinathduraisamy)

by ravikandagal1

Bit field byte alignment

#include<stdio.h> struct stu { unsigned int gen:1; unsigned int sub:10; union { int maths:14; int sci:6; char lang:8; int soc:3; }u; }; int...

[2 replies] Last: http://publications.gbdirect.co.uk/c_book/chapter6/bitfields.html htt... (by kbw)

by toks

problem with write() function

hello, i use the function : string msg(void) { stringstream c (stringstream::in | stringstream::out); //read from file return c.str(); } ...

[2 replies] Last: Yes, it is working ! Thank you very much GALIK . (by toks)

by vvadan

How to increase dbx stack size?

is there any way or an option to increase the dbx stack size? i get "internal error: stack overflow at line 1609 in file cplusplus.c" error when i try to pri...

[no replies]

by LupusNoctu

GTKmm: Beyond the One-Window-Wonders?

Well, I took a couple weeks off from coding to focus entirely on job hunting, getting my GED, and looking at colleges. Now that I can see daylight again, it's t...

[4 replies] Last: Thanks for the reply, computerquip. Yup. I am aware of that. lol. I... (by LupusNoctu)

by parusasi

using mq_open to create a new message queue.

Hi all, First of all thanks in advance for reading my post and for your heart for helping me. I am trying to create a message queue using mq_open(name,oflag...

[11 replies] Last: Ok, I'm running out of ideas. Can you run your program with strace ... (by jsmith)

by yman

operator new[] and data initialization

Hi all! I'm having a trouble with the operator new used to allocate an array of long unsigned int. I rely on the operator that all the array items are initia...

[2 replies] Last: Well, this is really a completely new information to me. Good to know.... (by yman)

by chaudhry

C++ socket

Hi, I'm working on sockets in linux using telnet. Every things seems to work perfectly fine but when i kill the telnet, it will terminate my socket connectio...

[6 replies] Last: Is it that write() is generating a SIGPIPE due to a broken socket?... (by closed account z05DSL3A)

by ricomoss

Abort (core dumped)

I've got a good question for you guys. I'm making some changes to existing code and have run into an issue I'm not sure how to fix. I'm trying to compile an...

[3 replies] Last: thank you for this information. Glad I have found it. (by juliepainting)

by ravikandagal1

Byte Alignment in C structure

Hello , I had a program which was crashing in HP IA 64 bit machine. My program is configured for 4 byte alignment( #pragma pack(4)). The same program didnt...

[2 replies] Last: I have these doubts : 1) when i aligned the 1st program for 8 byte ... (by ravikandagal1)

by DaaBears10

Problem with infile

I have an assignment where I read in data files in a specific format and then store them in an array. Putting it simply, when I read in my data file, it will re...

[2 replies] Last: Do this: while(getline(infile,title),!infile.eof || j < B) Thi... (by rocketboy9000)

C++

Forum

UNIX/Linux Programming - November 2010